{
 "source": "Original MyLevel practice questions written from the FAA's public material for the Remote Pilot (small UAS) knowledge test: 14 CFR Part 107 (eCFR), the Remote Pilot Airman Certification Standards FAA-S-ACS-10B, the Remote Pilot Study Guide FAA-G-8082-22, the FAA Remote ID and operations-over-people pages, and the FAA Aeronautical Information Manual",
 "rules": {
  "questions": 60,
  "passMark": 42,
  "minutes": 120,
  "note": "Checked on 19-10-2026. Official format: the FAA's initial remote pilot knowledge test is 'Unmanned Aircraft General - Small (UAG)': 60 multiple-choice questions, 2 hours, passing score 70% (FAA Airman Knowledge Testing Matrix, 25 September 2026; Remote Pilot ACS FAA-S-ACS-10B). It is taken at an FAA-approved Knowledge Testing Center (vendor PSI); the FAA says centers charge approximately $175. Minimum age for the certificate is 16 (14 CFR 107.61); the testing matrix lists 14 as the minimum age to take the test. ACS weighting: I Regulations 15-25%, II Airspace 15-25%, III Weather 11-16%, IV Loading and performance 7-11%, V Operations 35-45%. After a failure you wait 14 calendar days to retest; a passing test report is valid for 24 calendar months. Recurrent training every 24 calendar months is a free online FAA course (ALC-677). From 26 October 2026 the UAG test also includes image-based questions from VFR and IFR charts (FAA Airman Testing Community Advisory, September 2026); our questions are text-only and describe chart symbols in words, so also practise with the FAA testing supplement FAA-CT-8080-2H and the FAA's own UAG sample questions. The MyLevel mock exam copies the official length, time and pass mark (60 questions, 120 minutes, 42 correct = 70%) but is not the FAA test. Part 107 numbers (400 ft AGL, 87 knots/100 mph, 3 statute miles visibility, 500 ft below and 2,000 ft from clouds, 3-statute-mile anti-collision lights at night and civil twilight, 10-day accident report above $500 damage or serious injury/loss of consciousness, operations-over-people categories, Remote ID) were checked against the eCFR text of 14 CFR Part 107 and the FAA pages. MyLevel is not affiliated with the FAA, PSI or any testing center.",
  "sources": [
   "https://www.faa.gov/uas/commercial_operators/become_a_drone_pilot",
   "https://www.faa.gov/training_testing/testing/testing_matrix",
   "https://www.faa.gov/training_testing/testing/acs/uas_acs.pdf",
   "https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F/part-107",
   "https://www.faa.gov/faq/how-much-does-it-cost-get-remote-pilot-certificate",
   "https://www.faa.gov/uas/getting_started/remote_id",
   "https://www.faa.gov/uas/commercial_operators/operations_over_people",
   "https://www.faa.gov/sites/faa.gov/files/training_testing/testing/test_questions/uag_questions.pdf",
   "https://www.faa.gov/training_testing/testing/September_2026_Special_Edition.pdf"
  ]
 },
 "topics": [
  {
   "slug": "regs",
   "name": "Regulations (Part 107, Remote ID, over people)"
  },
  {
   "slug": "airspace",
   "name": "Airspace and operating requirements"
  },
  {
   "slug": "weather",
   "name": "Weather"
  },
  {
   "slug": "loading",
   "name": "Loading and performance"
  },
  {
   "slug": "ops",
   "name": "Operations, emergencies and decision-making"
  }
 ],
 "questions": [
  {
   "id": "p107-001",
   "topic": "regs",
   "q": "Under Part 107, a \"small unmanned aircraft\" must weigh:",
   "options": [
    "Less than 55 pounds at takeoff, including everything on board or attached",
    "Less than 55 pounds empty, not counting the battery, camera or other payload",
    "Less than 0.55 pounds at takeoff",
    "55 pounds or more, without the battery"
   ],
   "answer": 0,
   "explain": "14 CFR 107.3 defines a small unmanned aircraft as weighing less than 55 pounds on takeoff, including everything on board or otherwise attached.",
   "volatile": false
  },
  {
   "id": "p107-002",
   "topic": "regs",
   "q": "What is the minimum age to hold a remote pilot certificate with a small UAS rating?",
   "options": [
    "16 years",
    "21 years",
    "14 years",
    "18 years"
   ],
   "answer": 0,
   "explain": "Under 14 CFR 107.61 an applicant must be at least 16 years old, able to read, speak, write and understand English, and pass the knowledge test.",
   "volatile": false
  },
  {
   "id": "p107-003",
   "topic": "regs",
   "q": "To keep using the privileges of a remote pilot certificate, you must have passed the initial test or completed recurrent training within the previous:",
   "options": [
    "36 calendar months",
    "24 calendar months",
    "6 calendar months",
    "12 calendar months"
   ],
   "answer": 1,
   "explain": "14 CFR 107.65 requires aeronautical knowledge recency within the previous 24 calendar months.",
   "volatile": false
  },
  {
   "id": "p107-004",
   "topic": "regs",
   "q": "How do most remote pilots meet the recurrent knowledge requirement today?",
   "options": [
    "A free online FAA course on FAASTeam",
    "A written exam mailed by the FAA",
    "A paid retest at a Knowledge Testing Center",
    "A flight review with a flight instructor"
   ],
   "answer": 0,
   "explain": "Since April 2021 recurrent training is a free online course (Part 107 Small UAS Recurrent, ALC-677) on faasafety.gov.",
   "volatile": true
  },
  {
   "id": "p107-005",
   "topic": "regs",
   "q": "Within how many days must a reportable small UAS accident be reported to the FAA?",
   "options": [
    "48 hours",
    "10 calendar days",
    "24 hours",
    "30 calendar days"
   ],
   "answer": 1,
   "explain": "14 CFR 107.9 requires a report no later than 10 calendar days after the operation.",
   "volatile": false
  },
  {
   "id": "p107-006",
   "topic": "regs",
   "q": "Which event must be reported to the FAA?",
   "options": [
    "Your drone loses GPS and lands safely in a field",
    "Your drone scratches a fence and the repair costs $120",
    "Your drone damages a parked car and the repair costs $650",
    "Your own drone is destroyed in a crash, with no other damage and nobody hurt"
   ],
   "answer": 2,
   "explain": "Property damage other than to the drone itself must be reported unless repair (or fair market value) is $500 or less. Damage only to your own drone is not reportable.",
   "volatile": true
  },
  {
   "id": "p107-007",
   "topic": "regs",
   "q": "Your drone strikes a spectator who briefly loses consciousness. What must you do?",
   "options": [
    "Report it within 30 days to the NTSB only",
    "Report it only if the person goes to hospital",
    "Report it to the FAA within 10 days",
    "Nothing, if the person recovers quickly"
   ],
   "answer": 2,
   "explain": "Any loss of consciousness or serious injury must be reported to the FAA within 10 calendar days (14 CFR 107.9).",
   "volatile": false
  },
  {
   "id": "p107-008",
   "topic": "regs",
   "q": "Who must you show your remote pilot certificate to on request?",
   "options": [
    "The FAA, NTSB, TSA or a law enforcement officer",
    "Only an FAA inspector who shows you a written inspection order",
    "Nobody: a photo of it at home is enough",
    "Anyone at the site who asks to see it"
   ],
   "answer": 0,
   "explain": "Under 14 CFR 107.7 the remote pilot in command must have the certificate available and present it on request to the FAA, NTSB, TSA or any federal, state or local law enforcement officer.",
   "volatile": false
  },
  {
   "id": "p107-009",
   "topic": "regs",
   "q": "You moved to a new permanent mailing address. When may you no longer use your remote pilot certificate if you have not told the FAA?",
   "options": [
    "After 10 days",
    "Immediately",
    "After 30 days",
    "After 60 days"
   ],
   "answer": 2,
   "explain": "14 CFR 107.77: you may not exercise the privileges of the certificate after 30 days from the move unless you have notified the FAA of the new address.",
   "volatile": false
  },
  {
   "id": "p107-010",
   "topic": "regs",
   "q": "Which drones must be registered with the FAA when flown under Part 107?",
   "options": [
    "Every drone, whatever its weight",
    "Only drones that weigh more than 0.55 pounds (250 grams)",
    "Only drones flown over people",
    "Only drones of 2 pounds or more"
   ],
   "answer": 0,
   "explain": "The 0.55-pound (250 g) exception applies only to recreational flyers. Under Part 107 every drone must be registered.",
   "volatile": true
  },
  {
   "id": "p107-011",
   "topic": "regs",
   "q": "Registering a drone for Part 107 use on FAADroneZone costs:",
   "options": [
    "$5 for all your drones, valid for life",
    "$5 per drone, valid for 3 years",
    "$25 per drone, valid for 1 year",
    "Nothing, it is free for 3 years"
   ],
   "answer": 1,
   "explain": "The FAA charges $5 per drone for Part 107 registration and the registration is valid for three years.",
   "volatile": true
  },
  {
   "id": "p107-012",
   "topic": "regs",
   "q": "Where must the FAA registration number be shown?",
   "options": [
    "Only in the flight app",
    "On the remote controller only",
    "Inside the battery compartment",
    "On an outside surface of the drone"
   ],
   "answer": 3,
   "explain": "Since 2019 the registration number must be marked on an external surface of the drone so it can be seen without tools.",
   "volatile": true
  },
  {
   "id": "p107-013",
   "topic": "regs",
   "q": "Who is directly responsible for, and the final authority on, a Part 107 flight?",
   "options": [
    "The remote pilot in command",
    "The owner of the drone",
    "The visual observer",
    "The person holding the controls"
   ],
   "answer": 0,
   "explain": "14 CFR 107.19: the remote pilot in command is directly responsible for and is the final authority as to the operation.",
   "volatile": false
  },
  {
   "id": "p107-014",
   "topic": "regs",
   "q": "A friend without a remote pilot certificate wants to fly your drone on a paid job. This is allowed only if:",
   "options": [
    "Your friend has registered the drone",
    "The client agrees in writing that your friend may fly the drone",
    "Your friend stays below 200 feet",
    "You, as remote PIC, supervise and can take control at once"
   ],
   "answer": 3,
   "explain": "A person without a certificate may manipulate the controls only under the direct supervision of a remote pilot in command who can immediately take direct control (14 CFR 107.12).",
   "volatile": false
  },
  {
   "id": "p107-015",
   "topic": "regs",
   "q": "What is the maximum groundspeed for a small unmanned aircraft under Part 107?",
   "options": [
    "100 knots (115 mph)",
    "87 knots (100 mph)",
    "55 knots (63 mph)",
    "87 mph (76 knots)"
   ],
   "answer": 1,
   "explain": "14 CFR 107.51(a): groundspeed may not exceed 87 knots, which is 100 miles per hour.",
   "volatile": true
  },
  {
   "id": "p107-016",
   "topic": "regs",
   "q": "Without a waiver, the highest you may normally fly in open country is:",
   "options": [
    "400 feet above mean sea level",
    "500 feet above ground level",
    "400 feet above ground level",
    "1,200 feet above ground level"
   ],
   "answer": 2,
   "explain": "14 CFR 107.51(b): no higher than 400 feet AGL, unless flown within a 400-foot radius of a structure.",
   "volatile": true
  },
  {
   "id": "p107-017",
   "topic": "regs",
   "q": "You inspect a 600-foot radio tower and stay within 400 feet of it horizontally. What is your maximum altitude?",
   "options": [
    "600 feet AGL",
    "400 feet AGL",
    "800 feet AGL",
    "1,000 feet AGL"
   ],
   "answer": 3,
   "explain": "Within a 400-foot radius of a structure you may fly up to 400 feet above its top: 600 + 400 = 1,000 feet AGL.",
   "volatile": true
  },
  {
   "id": "p107-018",
   "topic": "regs",
   "q": "What minimum flight visibility, seen from the control station, does Part 107 require?",
   "options": [
    "3 nautical miles",
    "5 statute miles",
    "1 statute mile",
    "3 statute miles"
   ],
   "answer": 3,
   "explain": "14 CFR 107.51(c): minimum flight visibility from the control station must be at least 3 statute miles.",
   "volatile": true
  },
  {
   "id": "p107-019",
   "topic": "regs",
   "q": "How far below a cloud must a small unmanned aircraft stay?",
   "options": [
    "500 feet",
    "2,000 feet",
    "1,000 feet",
    "250 feet"
   ],
   "answer": 0,
   "explain": "14 CFR 107.51(d): at least 500 feet below the cloud and 2,000 feet horizontally from it.",
   "volatile": true
  },
  {
   "id": "p107-020",
   "topic": "regs",
   "q": "What is the minimum horizontal distance from clouds under Part 107?",
   "options": [
    "1 statute mile",
    "1,000 feet",
    "2,000 feet",
    "500 feet"
   ],
   "answer": 2,
   "explain": "14 CFR 107.51(d) requires 2,000 feet horizontally from the cloud.",
   "volatile": true
  },
  {
   "id": "p107-021",
   "topic": "regs",
   "q": "To fly at night under Part 107, the drone needs anti-collision lighting visible for at least:",
   "options": [
    "5 statute miles",
    "500 feet",
    "1 statute mile",
    "3 statute miles"
   ],
   "answer": 3,
   "explain": "14 CFR 107.29: lighted anti-collision lighting visible for at least 3 statute miles, with a flash rate sufficient to avoid a collision.",
   "volatile": true
  },
  {
   "id": "p107-022",
   "topic": "regs",
   "q": "Official sunset is at 7:42 pm (outside Alaska). When does evening civil twilight end?",
   "options": [
    "7:12 pm",
    "7:57 pm",
    "8:42 pm",
    "8:12 pm"
   ],
   "answer": 3,
   "explain": "Under 14 CFR 107.29, evening civil twilight runs from official sunset to 30 minutes after it: 7:42 + 30 min = 8:12 pm.",
   "volatile": false
  },
  {
   "id": "p107-023",
   "topic": "regs",
   "q": "Which lighting does Part 107 require when you fly during civil twilight?",
   "options": [
    "Only the position lights on the arms, no anti-collision light",
    "Lit anti-collision lights visible for 3 statute miles",
    "None, twilight counts as daytime",
    "A spotlight pointing at the ground"
   ],
   "answer": 1,
   "explain": "14 CFR 107.29(b) requires the same anti-collision lighting during civil twilight as at night.",
   "volatile": true
  },
  {
   "id": "p107-024",
   "topic": "regs",
   "q": "May the remote PIC dim the anti-collision lights during a night flight?",
   "options": [
    "No, they must stay at full brightness",
    "Only with written permission from the nearest ATC facility",
    "Yes, if safer, but they may not be switched off",
    "Yes, and switch them off near people"
   ],
   "answer": 2,
   "explain": "14 CFR 107.29 lets the remote PIC reduce the intensity of the anti-collision lighting in the interest of safety, but not turn it off.",
   "volatile": true
  },
  {
   "id": "p107-025",
   "topic": "regs",
   "q": "Before you may fly at night under Part 107 you must:",
   "options": [
    "Hold a private pilot night endorsement",
    "Obtain a night waiver from the FAA",
    "Have passed the updated test or training that covers night flying",
    "Use a visual observer who wears night vision goggles on every flight"
   ],
   "answer": 2,
   "explain": "Routine night operations are allowed without a waiver since April 2021 if the remote PIC completed the updated initial test or recurrent training (which includes night operations) and the drone has 3-statute-mile anti-collision lights.",
   "volatile": true
  },
  {
   "id": "p107-026",
   "topic": "regs",
   "q": "How long after drinking any alcoholic beverage must you wait before acting as a crewmember of a drone flight?",
   "options": [
    "24 hours",
    "12 hours",
    "8 hours",
    "4 hours"
   ],
   "answer": 2,
   "explain": "14 CFR 107.27 points to 91.17: no one may act as a crewmember within 8 hours after drinking any alcoholic beverage.",
   "volatile": false
  },
  {
   "id": "p107-027",
   "topic": "regs",
   "q": "What alcohol concentration prohibits you from acting as remote pilot?",
   "options": [
    "0.08 or greater",
    "0.10 or greater",
    "0.02 or greater",
    "0.04 or greater"
   ],
   "answer": 3,
   "explain": "Under 14 CFR 91.17 (applied by 107.27) you may not fly with an alcohol concentration of 0.04 or greater in a blood or breath specimen.",
   "volatile": false
  },
  {
   "id": "p107-028",
   "topic": "regs",
   "q": "Which of these may you use to keep visual line of sight with the drone?",
   "options": [
    "The live video on a tablet",
    "Your prescription glasses",
    "FPV goggles",
    "Binoculars"
   ],
   "answer": 1,
   "explain": "14 CFR 107.31 requires vision unaided by any device other than corrective lenses.",
   "volatile": false
  },
  {
   "id": "p107-029",
   "topic": "regs",
   "q": "Why must the drone stay in visual line of sight during the flight?",
   "options": [
    "Because Remote ID only works within sight",
    "To make sure the video link keeps working",
    "To read the registration number on the drone",
    "To know its position and attitude and see other air traffic"
   ],
   "answer": 3,
   "explain": "14 CFR 107.31: you must be able to see the drone to know where it is, determine its attitude, altitude and direction, watch for hazards and make sure it does not endanger anyone.",
   "volatile": false
  },
  {
   "id": "p107-030",
   "topic": "regs",
   "q": "Is a visual observer required under Part 107?",
   "options": [
    "Yes, but only at night",
    "Only for flights above 200 feet",
    "Yes, on every commercial flight, and the observer must hold a certificate",
    "No, but if used, you must be able to talk to them at all times"
   ],
   "answer": 3,
   "explain": "A visual observer is optional. If one is used, 14 CFR 107.33 requires effective communication between the remote PIC, the person at the controls and the observer.",
   "volatile": false
  },
  {
   "id": "p107-031",
   "topic": "regs",
   "q": "Under Part 107, how many drones may one remote pilot fly at the same time without a waiver?",
   "options": [
    "Two",
    "As many as the software can control",
    "One",
    "Three"
   ],
   "answer": 2,
   "explain": "14 CFR 107.35: a person may not operate or act as remote PIC or visual observer for more than one unmanned aircraft at a time without a waiver.",
   "volatile": false
  },
  {
   "id": "p107-032",
   "topic": "regs",
   "q": "From a moving car, Part 107 lets you fly a drone only:",
   "options": [
    "On highways below 30 mph",
    "To deliver paid packages",
    "If a passenger drives the car",
    "Over a sparsely populated area"
   ],
   "answer": 3,
   "explain": "14 CFR 107.25 allows operation from a moving land or water vehicle only over a sparsely populated area and not to carry another person's property for hire.",
   "volatile": false
  },
  {
   "id": "p107-033",
   "topic": "regs",
   "q": "May you fly a small drone from a moving aircraft under Part 107 without a waiver?",
   "options": [
    "Yes, over open water",
    "Yes, below 400 feet",
    "Yes, from a helicopter",
    "No, never"
   ],
   "answer": 3,
   "explain": "14 CFR 107.25 prohibits operation from a moving aircraft.",
   "volatile": false
  },
  {
   "id": "p107-034",
   "topic": "regs",
   "q": "May a small drone carry hazardous materials, such as a spare lithium battery for delivery, under Part 107?",
   "options": [
    "Yes, with ATC authorization and a visual observer on site",
    "No, hazardous materials are not allowed",
    "Yes, if under 5 pounds",
    "Yes, over sparsely populated areas"
   ],
   "answer": 1,
   "explain": "14 CFR 107.36 prohibits carriage of hazardous material as defined in 49 CFR 171.8.",
   "volatile": false
  },
  {
   "id": "p107-035",
   "topic": "regs",
   "q": "A small helicopter approaches the area where you are flying. Who has the right of way?",
   "options": [
    "Your drone, it was there first",
    "Whichever is on the right",
    "The helicopter: you must yield",
    "Whichever aircraft is lower"
   ],
   "answer": 2,
   "explain": "14 CFR 107.37: each small unmanned aircraft must yield the right of way to all aircraft, airborne vehicles and launch and reentry vehicles.",
   "volatile": false
  },
  {
   "id": "p107-036",
   "topic": "regs",
   "q": "Which airspace needs ATC authorization before a Part 107 flight?",
   "options": [
    "Class G within 5 statute miles of any airport, heliport or seaplane base",
    "Only Class B",
    "Class B, C, D and surface-area Class E",
    "All airspace above 200 feet"
   ],
   "answer": 2,
   "explain": "14 CFR 107.41: Class B, C or D airspace, or the surface area of Class E designated for an airport, requires prior ATC authorization.",
   "volatile": true
  },
  {
   "id": "p107-037",
   "topic": "regs",
   "q": "To fly in a restricted area under Part 107 you need:",
   "options": [
    "Only a NOTAM check",
    "Nothing below 400 feet",
    "A LAANC approval",
    "Permission from the using or controlling agency"
   ],
   "answer": 3,
   "explain": "14 CFR 107.45: no operation in prohibited or restricted areas unless you have permission from the using or controlling agency.",
   "volatile": false
  },
  {
   "id": "p107-038",
   "topic": "regs",
   "q": "Which Part 107 rule can NOT be waived?",
   "options": [
    "The ban on carrying hazardous materials",
    "Flying over people",
    "Visual line of sight",
    "The 400-foot altitude limit above ground level in open country"
   ],
   "answer": 0,
   "explain": "The waivable rules are listed in 14 CFR 107.205; 107.36 (hazardous material) is not on that list.",
   "volatile": true
  },
  {
   "id": "p107-039",
   "topic": "regs",
   "q": "Which of these operations can the FAA allow with a certificate of waiver?",
   "options": [
    "Flying with a 0.06 alcohol level if a visual observer is sober",
    "Flying beyond visual line of sight",
    "Carrying hazardous material",
    "Flying without registration"
   ],
   "answer": 1,
   "explain": "14 CFR 107.205 lists the waivable rules, including 107.31 (visual line of sight).",
   "volatile": true
  },
  {
   "id": "p107-040",
   "topic": "regs",
   "q": "Which is NOT one of the preflight actions required by 14 CFR 107.49?",
   "options": [
    "Filing a flight plan with ATC",
    "Briefing everyone involved in the flight",
    "Checking the control link works",
    "Making sure the battery has enough power"
   ],
   "answer": 0,
   "explain": "Before flight the remote PIC must assess the environment, brief participants, check the control link, power and that attached objects are secure. No flight plan is required.",
   "volatile": false
  },
  {
   "id": "p107-041",
   "topic": "regs",
   "q": "During an in-flight emergency, the remote PIC may:",
   "options": [
    "Only land at the nearest airport",
    "Deviate only after getting permission from ATC by phone or radio",
    "Deviate from any rule as needed to meet the emergency",
    "Not deviate from any rule"
   ],
   "answer": 2,
   "explain": "14 CFR 107.21 allows any deviation needed to meet the emergency; the FAA may ask for a written report.",
   "volatile": false
  },
  {
   "id": "p107-042",
   "topic": "regs",
   "q": "Under Part 107, dropping an object from a drone is:",
   "options": [
    "Never allowed",
    "Allowed if it creates no undue hazard to people or property",
    "Allowed only with a waiver",
    "Allowed only over water or fenced private land, never elsewhere"
   ],
   "answer": 1,
   "explain": "14 CFR 107.23(b) only prohibits dropping objects in a way that creates an undue hazard to persons or property.",
   "volatile": false
  },
  {
   "id": "p107-043",
   "topic": "regs",
   "q": "May a Part 107 drone transmit ADS-B Out?",
   "options": [
    "Yes, it is required at night and in controlled airspace",
    "Yes, in Class G only",
    "No, unless the FAA has authorized it",
    "Yes, it is required above 200 feet"
   ],
   "answer": 2,
   "explain": "14 CFR 107.52 prohibits operating with ADS-B Out transmitting unless otherwise authorized; manned aircraft rely on that system and drones would clutter it.",
   "volatile": true
  },
  {
   "id": "p107-044",
   "topic": "regs",
   "q": "Which is one of the three ways to comply with the Remote ID rule?",
   "options": [
    "Filing a flight plan for each flight",
    "Flying inside an FAA-Recognized Identification Area (FRIA)",
    "Turning on the drone's ADS-B Out",
    "Taping your phone number to the drone"
   ],
   "answer": 1,
   "explain": "You comply with a standard Remote ID drone, a Remote ID broadcast module, or by flying within an FRIA (14 CFR Part 89).",
   "volatile": true
  },
  {
   "id": "p107-045",
   "topic": "regs",
   "q": "A drone with a Remote ID broadcast module (not a standard Remote ID drone) must be flown:",
   "options": [
    "Only below 200 feet",
    "Only inside an FRIA or another area approved by the FAA",
    "Within visual line of sight at all times",
    "Only in Class G airspace"
   ],
   "answer": 2,
   "explain": "The FAA states that pilots using a broadcast module must be able to see their drone at all times during flight.",
   "volatile": true
  },
  {
   "id": "p107-046",
   "topic": "regs",
   "q": "A Remote ID broadcast module sends the drone's identity and location plus the location of:",
   "options": [
    "The owner's home address",
    "The take-off point",
    "The nearest airport",
    "The control station"
   ],
   "answer": 1,
   "explain": "A standard Remote ID drone broadcasts the control station location; a broadcast module broadcasts the take-off location instead.",
   "volatile": true
  },
  {
   "id": "p107-047",
   "topic": "regs",
   "q": "What is an FAA-Recognized Identification Area (FRIA)?",
   "options": [
    "An area where Part 107 does not apply",
    "A zone near an airport where LAANC authorizations are unavailable",
    "An area where drones without Remote ID may fly within sight",
    "A no-fly zone around stadiums"
   ],
   "answer": 2,
   "explain": "An FRIA is a defined area, requested by a community-based organization or educational institution, where drones without Remote ID equipment may fly within visual line of sight.",
   "volatile": true
  },
  {
   "id": "p107-048",
   "topic": "regs",
   "q": "Category 1 operations over people need a drone that:",
   "options": [
    "Weighs 0.55 lb or less, no exposed rotating parts that could cut skin",
    "Weighs under 2 pounds and has propeller guards fitted on every rotor",
    "Transfers less than 25 foot-pounds on impact",
    "Has an FAA airworthiness certificate"
   ],
   "answer": 0,
   "explain": "14 CFR 107.110: 0.55 pounds or less including everything attached, and no exposed rotating parts that would lacerate human skin.",
   "volatile": true
  },
  {
   "id": "p107-049",
   "topic": "regs",
   "q": "For Category 2 operations over people, the drone may not cause an injury equal to or greater than a transfer of:",
   "options": [
    "11 foot-pounds of kinetic energy",
    "25 foot-pounds of kinetic energy",
    "0.55 foot-pounds of kinetic energy",
    "55 foot-pounds of kinetic energy"
   ],
   "answer": 0,
   "explain": "14 CFR 107.120: Category 2 uses the 11 foot-pound threshold, with a declaration of compliance and a label.",
   "volatile": true
  },
  {
   "id": "p107-050",
   "topic": "regs",
   "q": "The impact energy threshold for Category 3 operations over people is:",
   "options": [
    "25 foot-pounds",
    "0.55 foot-pounds",
    "11 foot-pounds",
    "50 foot-pounds"
   ],
   "answer": 0,
   "explain": "14 CFR 107.130: Category 3 drones may not cause an injury equal to or greater than a transfer of 25 foot-pounds.",
   "volatile": true
  },
  {
   "id": "p107-051",
   "topic": "regs",
   "q": "Which is true of Category 3 operations over people?",
   "options": [
    "They may fly over any crowd",
    "They may never be over open-air assemblies",
    "They are allowed only at night",
    "They need an airworthiness certificate issued under Part 21"
   ],
   "answer": 1,
   "explain": "14 CFR 107.125: no flight over open-air assemblies; over individuals only on a closed or restricted-access site with notice, or without sustained flight over people.",
   "volatile": true
  },
  {
   "id": "p107-052",
   "topic": "regs",
   "q": "Which category of operations over people requires a Part 21 airworthiness certificate?",
   "options": [
    "Category 1",
    "Category 4",
    "Category 3",
    "Category 2"
   ],
   "answer": 1,
   "explain": "14 CFR 107.140: Category 4 drones must have an airworthiness certificate issued under Part 21 and follow the approved flight manual.",
   "volatile": true
  },
  {
   "id": "p107-053",
   "topic": "regs",
   "q": "Sustained flight over an open-air assembly in Category 1, 2 or 4 is allowed only if:",
   "options": [
    "A visual observer stands in the crowd",
    "You stay above 300 feet",
    "The crowd is under 50 people",
    "The drone complies with Remote ID"
   ],
   "answer": 3,
   "explain": "14 CFR 107.110(b), 107.115(b) and 107.140 allow sustained flight over open-air assemblies only if the operation meets the Remote ID rules of Part 89.",
   "volatile": true
  },
  {
   "id": "p107-054",
   "topic": "regs",
   "q": "Without meeting any operations-over-people category, you may fly over a person who is:",
   "options": [
    "Inside a stationary car",
    "Sitting on an open bench",
    "Inside a moving bus",
    "Walking on a sidewalk"
   ],
   "answer": 0,
   "explain": "14 CFR 107.39 allows flight over people directly participating, under a covered structure, or inside a stationary vehicle that gives reasonable protection.",
   "volatile": false
  },
  {
   "id": "p107-055",
   "topic": "regs",
   "q": "A conviction for a federal or state drug offense can lead the FAA to deny an application for a remote pilot certificate for up to:",
   "options": [
    "1 year after the final conviction",
    "6 months after the date of the conviction",
    "5 years after the conviction",
    "Life"
   ],
   "answer": 0,
   "explain": "14 CFR 107.57: a drug or alcohol conviction is grounds for denial of an application for up to 1 year after the date of final conviction, or suspension or revocation.",
   "volatile": false
  },
  {
   "id": "p107-056",
   "topic": "regs",
   "q": "You failed the UAG knowledge test. According to the FAA Remote Pilot ACS, when may you retest?",
   "options": [
    "After 6 calendar months",
    "The next day",
    "After 30 calendar days",
    "After 14 calendar days"
   ],
   "answer": 3,
   "explain": "The Remote Pilot ACS (FAA-S-ACS-10B) states that an applicant who fails must wait 14 calendar days before retesting.",
   "volatile": true
  },
  {
   "id": "p107-057",
   "topic": "regs",
   "q": "A passing UAG knowledge test report is valid for applying for the certificate for:",
   "options": [
    "Life",
    "12 calendar months",
    "6 calendar months",
    "24 calendar months"
   ],
   "answer": 3,
   "explain": "The Remote Pilot ACS states that the knowledge test report is valid for 24 calendar months.",
   "volatile": true
  },
  {
   "id": "p107-058",
   "topic": "regs",
   "q": "Which flight must be flown under Part 107 (not the recreational exception)?",
   "options": [
    "A teenager flying for fun in a park",
    "A real estate agent filming a house for a listing",
    "A parent flying a model airplane at a community club field for fun",
    "A hobbyist filming a sunset for himself"
   ],
   "answer": 1,
   "explain": "Any flight in furtherance of a business is not recreational and needs a remote pilot certificate under Part 107.",
   "volatile": false
  },
  {
   "id": "p107-059",
   "topic": "regs",
   "q": "Do you need an FAA medical certificate to act as remote pilot in command?",
   "options": [
    "No, but you may not fly with a condition that makes it unsafe",
    "Yes, a basic medical every 4 years",
    "Only for flights over people",
    "Yes, a third-class medical certificate from an FAA medical examiner"
   ],
   "answer": 0,
   "explain": "14 CFR 107.17 requires no medical certificate, but you may not fly if you know or have reason to know of a condition that would interfere with safe operation.",
   "volatile": false
  },
  {
   "id": "p107-060",
   "topic": "regs",
   "q": "Under Part 107, when carrying property for hire, the total weight of drone plus cargo must be:",
   "options": [
    "Less than 55 pounds",
    "Less than 100 pounds",
    "Less than 0.55 pounds",
    "Less than 25 pounds"
   ],
   "answer": 0,
   "explain": "Part 107 allows carrying property for compensation only if the total weight, including the cargo, is less than 55 pounds.",
   "volatile": false
  },
  {
   "id": "p107-061",
   "topic": "regs",
   "q": "Who must check that the drone is in a condition for safe operation before each flight?",
   "options": [
    "An FAA-certified mechanic",
    "The remote pilot in command",
    "The drone manufacturer",
    "The visual observer"
   ],
   "answer": 1,
   "explain": "14 CFR 107.15 and 107.49: the remote PIC must check before each flight that the small UAS is in a condition for safe operation.",
   "volatile": false
  },
  {
   "id": "p107-062",
   "topic": "regs",
   "q": "Who may ask the remote PIC to make the drone and records available for inspection?",
   "options": [
    "Any property owner nearby",
    "The FAA",
    "Only the drone manufacturer",
    "Only your insurance company"
   ],
   "answer": 1,
   "explain": "14 CFR 107.7(b): on request, the remote PIC, owner or operator must make the small UAS and required records available to the FAA for inspection or testing.",
   "volatile": false
  },
  {
   "id": "p107-063",
   "topic": "airspace",
   "q": "In which airspace class may a Part 107 pilot fly without any ATC authorization?",
   "options": [
    "Class B",
    "Class G",
    "Class C",
    "Class D"
   ],
   "answer": 1,
   "explain": "Class G is uncontrolled airspace; Part 107 needs ATC authorization only in Class B, C, D and surface-area Class E.",
   "volatile": false
  },
  {
   "id": "p107-064",
   "topic": "airspace",
   "q": "What is LAANC?",
   "options": [
    "An FAA system that gives near-real-time airspace authorizations",
    "The FAA drone registration website",
    "A list of restricted areas",
    "A weather and NOTAM service for drone pilots from the National Weather Service"
   ],
   "answer": 0,
   "explain": "LAANC (Low Altitude Authorization and Notification Capability) gives automated authorizations below the altitudes on the UAS Facility Maps at many airports.",
   "volatile": false
  },
  {
   "id": "p107-065",
   "topic": "airspace",
   "q": "A UAS Facility Map grid near an airport shows \"200\". What does that mean?",
   "options": [
    "Flight is banned above 200 feet MSL",
    "You must stay 200 feet from the runway",
    "Authorization up to 200 feet AGL may be granted there",
    "The grid is 200 feet wide"
   ],
   "answer": 2,
   "explain": "UAS Facility Map numbers give the maximum altitude AGL the FAA may authorize in that grid, for example through LAANC.",
   "volatile": false
  },
  {
   "id": "p107-066",
   "topic": "airspace",
   "q": "Class E airspace that starts at the surface around an airport (a dashed magenta line on a sectional) requires:",
   "options": [
    "ATC authorization",
    "A visual observer",
    "A waiver from the FAA",
    "Nothing below 400 feet"
   ],
   "answer": 0,
   "explain": "14 CFR 107.41 requires authorization in the surface area of Class E airspace designated for an airport.",
   "volatile": true
  },
  {
   "id": "p107-067",
   "topic": "airspace",
   "q": "On a sectional, a faded magenta band marks Class E starting at 700 feet AGL. Flying at 300 feet AGL inside the band, you are in:",
   "options": [
    "Class B airspace: authorization needed",
    "Class E airspace: ATC authorization needed for any drone flight",
    "Class D airspace: authorization needed",
    "Class G airspace: no authorization needed"
   ],
   "answer": 3,
   "explain": "Below 700 feet AGL the airspace is Class G, so a drone at 300 feet does not need ATC authorization there.",
   "volatile": false
  },
  {
   "id": "p107-068",
   "topic": "airspace",
   "q": "Class D airspace is shown on a sectional chart by:",
   "options": [
    "A dashed blue line",
    "A solid magenta line",
    "A faded magenta band",
    "A solid blue line"
   ],
   "answer": 0,
   "explain": "Class D is a dashed blue line; Class C is solid magenta, Class B solid blue and surface Class E dashed magenta.",
   "volatile": false
  },
  {
   "id": "p107-069",
   "topic": "airspace",
   "q": "Class C airspace is shown on a sectional chart by:",
   "options": [
    "Dashed magenta lines",
    "Solid magenta lines",
    "Dashed blue lines",
    "Solid blue lines"
   ],
   "answer": 1,
   "explain": "Class C airspace uses solid magenta lines around a surface area and an outer shelf.",
   "volatile": false
  },
  {
   "id": "p107-070",
   "topic": "airspace",
   "q": "Class B airspace on a sectional chart is shown by:",
   "options": [
    "Solid blue lines",
    "Dashed blue lines",
    "Solid magenta lines",
    "A blue vignette"
   ],
   "answer": 0,
   "explain": "Class B airspace, around the busiest airports, is outlined with solid blue lines and looks like an upside-down wedding cake.",
   "volatile": false
  },
  {
   "id": "p107-071",
   "topic": "airspace",
   "q": "Class D airspace usually reaches from the surface up to about:",
   "options": [
    "2,500 feet above the airport elevation",
    "10,000 feet MSL",
    "1,200 feet above the airport elevation",
    "4,000 feet above the airport elevation"
   ],
   "answer": 0,
   "explain": "Class D normally extends from the surface to 2,500 feet above the airport elevation; the exact ceiling is printed in a dashed box in MSL.",
   "volatile": false
  },
  {
   "id": "p107-072",
   "topic": "airspace",
   "q": "A Class D ceiling is printed as [25] and the airport elevation is 800 feet MSL. How high is the ceiling above the airport?",
   "options": [
    "2,500 feet",
    "3,300 feet",
    "800 feet",
    "1,700 feet"
   ],
   "answer": 3,
   "explain": "Ceilings are in hundreds of feet MSL: 2,500 MSL minus 800 feet elevation = 1,700 feet above the airport.",
   "volatile": false
  },
  {
   "id": "p107-073",
   "topic": "airspace",
   "q": "A Class C shelf is labeled 40 over 15. What does that mean?",
   "options": [
    "Radius 40 miles, floor 15 miles",
    "Ceiling 4,000 feet AGL, floor 1,500 feet AGL",
    "Ceiling 400 feet AGL, floor 150 feet AGL",
    "Ceiling 4,000 feet MSL, floor 1,500 feet MSL"
   ],
   "answer": 3,
   "explain": "Class B and C altitudes on sectionals are in hundreds of feet MSL: top number = ceiling, bottom = floor.",
   "volatile": false
  },
  {
   "id": "p107-074",
   "topic": "airspace",
   "q": "Under a Class C shelf with a floor of 1,500 feet MSL, the ground is 1,250 feet MSL. How high can you fly without entering Class C?",
   "options": [
    "Up to 1,500 feet AGL",
    "Up to 250 feet AGL",
    "Up to 150 feet AGL",
    "Up to 400 feet AGL"
   ],
   "answer": 1,
   "explain": "The shelf starts at 1,500 MSL; 1,500 - 1,250 = 250 feet above the ground. Above that you would be in Class C and need authorization.",
   "volatile": false
  },
  {
   "id": "p107-075",
   "topic": "airspace",
   "q": "Class A airspace starts at:",
   "options": [
    "14,500 feet MSL",
    "10,000 feet MSL",
    "18,000 feet MSL",
    "1,200 feet AGL"
   ],
   "answer": 2,
   "explain": "Class A runs from 18,000 feet MSL up to FL600; it is far above any Part 107 flight.",
   "volatile": false
  },
  {
   "id": "p107-076",
   "topic": "airspace",
   "q": "An obstacle on a sectional is labeled 1549 above (1149) in parentheses. What does that mean?",
   "options": [
    "It is 1,549 feet from the nearest airport",
    "Stay at least 1,149 feet away from it horizontally",
    "Top is 1,549 feet MSL and 1,149 feet above ground",
    "Top is 1,149 feet MSL and 1,549 feet AGL"
   ],
   "answer": 2,
   "explain": "On sectionals the bold figure is the obstacle top in MSL and the figure in parentheses is its height above ground level.",
   "volatile": false
  },
  {
   "id": "p107-077",
   "topic": "airspace",
   "q": "A Maximum Elevation Figure (MEF) printed as a large 3 and a small 4 means:",
   "options": [
    "3,400 feet MSL",
    "3,400 feet AGL",
    "340 feet AGL",
    "34,000 feet MSL"
   ],
   "answer": 0,
   "explain": "The MEF shows the highest elevation in a quadrangle, with obstacles, in thousands (large digit) and hundreds (small digit) of feet MSL.",
   "volatile": false
  },
  {
   "id": "p107-078",
   "topic": "airspace",
   "q": "What may a drone pilot expect in a Military Operations Area (MOA)?",
   "options": [
    "A total ban on all civil flights",
    "ATC authorization is always required",
    "Live artillery firing at ground level",
    "Military training: flying is allowed, but with extra caution"
   ],
   "answer": 3,
   "explain": "MOAs separate military training from IFR traffic. Drones are not banned there, but pilots should check activity and use caution.",
   "volatile": false
  },
  {
   "id": "p107-079",
   "topic": "airspace",
   "q": "A restricted area on a sectional is mainly a warning of:",
   "options": [
    "Unusual, often invisible hazards such as artillery firing",
    "Bird sanctuaries",
    "Busy airline arrival and departure routes near large airports",
    "High-volume pilot training"
   ],
   "answer": 0,
   "explain": "Restricted areas contain unusual, often invisible hazards to aircraft such as artillery firing, aerial gunnery or guided missiles.",
   "volatile": false
  },
  {
   "id": "p107-080",
   "topic": "airspace",
   "q": "In a prohibited area, such as the one over the White House:",
   "options": [
    "Only recreational drones are banned",
    "All flights are banned unless specially authorized",
    "Drones may fly there if they have a LAANC approval from the FAA",
    "Drones may fly below 200 feet"
   ],
   "answer": 1,
   "explain": "Prohibited areas are established for national security; flight is not allowed without permission from the controlling agency.",
   "volatile": false
  },
  {
   "id": "p107-081",
   "topic": "airspace",
   "q": "A warning area is airspace that:",
   "options": [
    "Surrounds every nuclear power plant and large dam in the United States",
    "Starts 3 nautical miles off the US coast and may hold hazards",
    "Is reserved for drone testing",
    "Marks the edge of Class B"
   ],
   "answer": 1,
   "explain": "Warning areas extend from 3 nautical miles outward from the US coast and contain activity that may be hazardous to aircraft.",
   "volatile": false
  },
  {
   "id": "p107-082",
   "topic": "airspace",
   "q": "An alert area on a sectional tells you:",
   "options": [
    "There is a lot of pilot training or unusual aerial activity",
    "That drone flights are prohibited",
    "That ATC radar does not reach the area, so you must carry a radio",
    "That a wildfire is burning"
   ],
   "answer": 0,
   "explain": "Alert areas show high volumes of pilot training or unusual aerial activity. No permission is needed, but all pilots are responsible for collision avoidance.",
   "volatile": false
  },
  {
   "id": "p107-083",
   "topic": "airspace",
   "q": "A Military Training Route with a four-digit number, such as VR 1257, is flown:",
   "options": [
    "Only at night",
    "Only above 10,000 feet MSL",
    "Above 1,500 feet AGL",
    "At or below 1,500 feet AGL"
   ],
   "answer": 3,
   "explain": "MTRs with four-digit numbers have no segment above 1,500 feet AGL; three-digit routes have one or more segments above 1,500 feet AGL. Military jets fly them fast and low.",
   "volatile": false
  },
  {
   "id": "p107-084",
   "topic": "airspace",
   "q": "The standing temporary flight restriction over major stadium events covers:",
   "options": [
    "10 nautical miles and up to 18,000 feet MSL",
    "1 statute mile and up to 400 feet AGL",
    "3 nautical miles and up to 3,000 feet AGL",
    "5 statute miles and up to 1,200 feet AGL"
   ],
   "answer": 2,
   "explain": "The FAA stadium TFR covers a 3-nautical-mile radius up to 3,000 feet AGL, from 1 hour before to 1 hour after qualifying events.",
   "volatile": true
  },
  {
   "id": "p107-085",
   "topic": "airspace",
   "q": "How long does the stadium TFR for a qualifying game last?",
   "options": [
    "Only during the game itself",
    "From 1 hour before to 1 hour after the event",
    "The whole day of the event",
    "From 3 hours before to 3 hours after"
   ],
   "answer": 1,
   "explain": "The standing stadium TFR applies from one hour before the scheduled start until one hour after the end of the event.",
   "volatile": true
  },
  {
   "id": "p107-086",
   "topic": "airspace",
   "q": "Where do you find temporary flight restrictions (TFRs) before a flight?",
   "options": [
    "In the METAR",
    "On the drone's registration card",
    "In NOTAMs",
    "In the TAF"
   ],
   "answer": 2,
   "explain": "TFRs are published as NOTAMs (Notices to Air Missions); 14 CFR 107.47 requires you to comply with them.",
   "volatile": false
  },
  {
   "id": "p107-087",
   "topic": "airspace",
   "q": "A wildfire TFR is in effect near your job site. What should you do?",
   "options": [
    "Fly above 400 feet to stay clear of aircraft",
    "Fly only when no aircraft are visible",
    "Stay out unless authorized: drones can ground firefighting aircraft",
    "Fly in, if you are filming for a news station and stay below 400 feet"
   ],
   "answer": 2,
   "explain": "Drones in a wildfire TFR can force firefighting aircraft to stop. Under 14 CFR 107.47 and 91.137 you must comply with the TFR.",
   "volatile": false
  },
  {
   "id": "p107-088",
   "topic": "airspace",
   "q": "Near an airport, Part 107 says a drone must not:",
   "options": [
    "Use a visual observer",
    "Fly lower than 400 feet",
    "Interfere with operations and traffic patterns",
    "Fly within 5 miles of the airport without first calling the tower"
   ],
   "answer": 2,
   "explain": "14 CFR 107.43: no person may operate a small unmanned aircraft in a way that interferes with operations and traffic patterns at any airport, heliport or seaplane base.",
   "volatile": false
  },
  {
   "id": "p107-089",
   "topic": "airspace",
   "q": "Unless an airport publishes otherwise, airplanes in the traffic pattern make:",
   "options": [
    "Right turns",
    "Left turns",
    "No turns below 1,000 feet",
    "Turns toward the tower"
   ],
   "answer": 1,
   "explain": "Standard traffic patterns use left turns; right traffic is shown on charts, in the Chart Supplement or by a segmented circle.",
   "volatile": false
  },
  {
   "id": "p107-090",
   "topic": "airspace",
   "q": "An airplane is landing on runway 9. In which direction is it flying?",
   "options": [
    "West (about 270 degrees)",
    "North (about 360 degrees)",
    "East (about 090 degrees)",
    "South (about 180 degrees)"
   ],
   "answer": 2,
   "explain": "Runway numbers are the magnetic heading in tens of degrees: runway 9 is about 090, east.",
   "volatile": false
  },
  {
   "id": "p107-091",
   "topic": "airspace",
   "q": "What is the number at the opposite end of runway 27?",
   "options": [
    "18",
    "9",
    "27",
    "36"
   ],
   "answer": 1,
   "explain": "The two ends of a runway differ by 180 degrees: 270 - 180 = 090, so the other end is runway 9.",
   "volatile": false
  },
  {
   "id": "p107-092",
   "topic": "airspace",
   "q": "Wind is from the north and an airport has runways 18 and 36. Airplanes will usually land on:",
   "options": [
    "Runway 18",
    "Neither, the wind is a crosswind",
    "Either, depending on the tower",
    "Runway 36"
   ],
   "answer": 3,
   "explain": "Aircraft land into the wind. With a north wind they fly north, which is runway 36.",
   "volatile": false
  },
  {
   "id": "p107-093",
   "topic": "airspace",
   "q": "A rotating beacon flashing white and green marks:",
   "options": [
    "A heliport",
    "A lighted land airport",
    "A military airport only",
    "A water airport"
   ],
   "answer": 1,
   "explain": "White-green = lighted land airport; white-yellow = water airport; green-yellow-white = heliport; military fields flash two quick whites between greens.",
   "volatile": false
  },
  {
   "id": "p107-094",
   "topic": "airspace",
   "q": "At night you see both the red and the green position light of an airplane. It is most likely:",
   "options": [
    "Flying toward you",
    "Parked on the ground",
    "Crossing from left to right",
    "Flying away from you"
   ],
   "answer": 0,
   "explain": "Red is on the left wingtip and green on the right. Seeing both at once means the aircraft is heading toward you.",
   "volatile": false
  },
  {
   "id": "p107-095",
   "topic": "airspace",
   "q": "Which publication lists an airport's runways, frequencies such as CTAF, and remarks?",
   "options": [
    "The METAR",
    "The TAF",
    "The Remote Pilot ACS",
    "The Chart Supplement"
   ],
   "answer": 3,
   "explain": "The Chart Supplement (formerly Airport/Facility Directory) gives detailed airport information, including what class the airspace becomes when the tower closes.",
   "volatile": false
  },
  {
   "id": "p107-096",
   "topic": "airspace",
   "q": "Why should you keep well clear of tall towers even when flying beside them?",
   "options": [
    "They always have a temporary flight restriction around them",
    "Their radio signals switch drones off",
    "Their guy wires can extend far out and are hard to see",
    "They are always in Class D airspace"
   ],
   "answer": 2,
   "explain": "Guy wires can extend a long way from a tower and are nearly invisible; FAA guidance tells pilots to avoid them by a wide margin.",
   "volatile": false
  },
  {
   "id": "p107-097",
   "topic": "airspace",
   "q": "Under Part 107, the weather minimums (3 statute miles, 500 feet below and 2,000 feet from clouds) apply:",
   "options": [
    "In every airspace class",
    "Only in Class B, C and D",
    "Only in Class G",
    "Only above 200 feet AGL"
   ],
   "answer": 0,
   "explain": "14 CFR 107.51 sets the same visibility and cloud clearance for small UAS in all airspace.",
   "volatile": true
  },
  {
   "id": "p107-098",
   "topic": "airspace",
   "q": "One degree of latitude is divided into:",
   "options": [
    "360 minutes",
    "10 minutes",
    "100 minutes",
    "60 minutes"
   ],
   "answer": 3,
   "explain": "Latitude and longitude are measured in degrees, each divided into 60 minutes (and each minute into 60 seconds).",
   "volatile": false
  },
  {
   "id": "p107-099",
   "topic": "airspace",
   "q": "One minute of latitude is about:",
   "options": [
    "10 nautical miles",
    "100 feet",
    "1 nautical mile",
    "1 statute mile"
   ],
   "answer": 2,
   "explain": "One minute of latitude equals about one nautical mile (6,076 feet), which is why charts use nautical miles.",
   "volatile": false
  },
  {
   "id": "p107-100",
   "topic": "airspace",
   "q": "Lines of latitude measure distance:",
   "options": [
    "East or west of Greenwich",
    "From the nearest airport",
    "Above mean sea level",
    "North or south of the equator"
   ],
   "answer": 3,
   "explain": "Latitude lines run parallel to the equator and measure north-south position; longitude measures east-west from the prime meridian.",
   "volatile": false
  },
  {
   "id": "p107-101",
   "topic": "airspace",
   "q": "An unmanned free balloon launch site is shown on a chart. Why does it matter to a drone pilot?",
   "options": [
    "It means a temporary flight restriction covers the whole area",
    "Balloons can rise through your area with long trailing lines",
    "It is an FRIA",
    "It marks a restricted area"
   ],
   "answer": 1,
   "explain": "Unmanned free balloons may climb through low altitudes trailing lines and payloads, a collision hazard listed in the Remote Pilot ACS.",
   "volatile": false
  },
  {
   "id": "p107-102",
   "topic": "airspace",
   "q": "The tower of a Class D airport closes at 10 pm. Where do you find which class of airspace applies after closing?",
   "options": [
    "On the drone's app only",
    "In the METAR remarks",
    "In the aircraft registry",
    "In the Chart Supplement"
   ],
   "answer": 3,
   "explain": "When the tower closes, Class D usually becomes Class E or G; the Chart Supplement states which.",
   "volatile": false
  },
  {
   "id": "p107-103",
   "topic": "weather",
   "q": "What is a METAR?",
   "options": [
    "A routine surface weather observation at an airport",
    "A notice of temporary flight restrictions",
    "A warning of severe thunderstorms",
    "A forecast for the next 24 hours"
   ],
   "answer": 0,
   "explain": "A METAR is an aviation routine weather report, normally issued every hour.",
   "volatile": false
  },
  {
   "id": "p107-104",
   "topic": "weather",
   "q": "A Terminal Aerodrome Forecast (TAF) covers the area within:",
   "options": [
    "50 nautical miles of the airport",
    "1 statute mile of the runway",
    "The whole state",
    "5 statute miles of the airport"
   ],
   "answer": 3,
   "explain": "A TAF is a forecast for the area within 5 statute miles of the runway complex, usually for 24 or 30 hours.",
   "volatile": false
  },
  {
   "id": "p107-105",
   "topic": "weather",
   "q": "A METAR shows \"31015G25KT\". What is the wind?",
   "options": [
    "Toward 310 degrees at 15 knots",
    "From 310 degrees at 25 knots, gusting 15 knots",
    "From 310 degrees at 15 knots, gusting 25 knots",
    "From 150 degrees at 31 knots"
   ],
   "answer": 2,
   "explain": "The first three digits are the direction the wind blows from (true), then speed, then G and the gust speed, all in knots.",
   "volatile": false
  },
  {
   "id": "p107-106",
   "topic": "weather",
   "q": "A METAR lists \"FEW040 SCT080 BKN120 OVC200\". What is the ceiling?",
   "options": [
    "20,000 feet AGL",
    "4,000 feet AGL",
    "12,000 feet AGL",
    "8,000 feet AGL"
   ],
   "answer": 2,
   "explain": "The ceiling is the lowest broken (BKN) or overcast (OVC) layer. Cloud heights are in hundreds of feet above ground: BKN120 = 12,000 feet.",
   "volatile": false
  },
  {
   "id": "p107-107",
   "topic": "weather",
   "q": "In a METAR, \"M02/M05\" means:",
   "options": [
    "Temperature 2 degrees F and dew point 5 degrees F, both above zero",
    "Wind 2 knots, gusting 5 knots",
    "Visibility 2 to 5 miles",
    "Temperature -2 degrees C, dew point -5 degrees C"
   ],
   "answer": 3,
   "explain": "Temperature and dew point are in degrees Celsius; M means minus.",
   "volatile": false
  },
  {
   "id": "p107-108",
   "topic": "weather",
   "q": "A METAR reports temperature 12 degrees C and dew point 11 degrees C, with calm wind at dawn. What should you expect?",
   "options": [
    "Strong gusty winds",
    "Fog or very low clouds",
    "Thunderstorms within the hour",
    "Clear skies and unlimited visibility"
   ],
   "answer": 1,
   "explain": "When the temperature-dew point spread is small, the air is close to saturation and fog or low clouds are likely.",
   "volatile": false
  },
  {
   "id": "p107-109",
   "topic": "weather",
   "q": "In a METAR, \"A3002\" is:",
   "options": [
    "The altimeter setting, 30.02 inches of mercury",
    "The airport elevation, 3,002 feet",
    "The time, 30:02 UTC",
    "Visibility of 30 miles"
   ],
   "answer": 0,
   "explain": "A followed by four digits is the altimeter setting in inches of mercury.",
   "volatile": false
  },
  {
   "id": "p107-110",
   "topic": "weather",
   "q": "What does \"+TSRA\" in a METAR mean?",
   "options": [
    "Thunderstorm in the vicinity, no rain",
    "A thunderstorm with heavy rain",
    "Light rain after a thunderstorm",
    "Rain expected later in the day"
   ],
   "answer": 1,
   "explain": "+ means heavy, TS is thunderstorm and RA is rain.",
   "volatile": false
  },
  {
   "id": "p107-111",
   "topic": "weather",
   "q": "In a METAR, \"BR\" stands for:",
   "options": [
    "Broken clouds",
    "Mist",
    "Breezy winds",
    "Blowing rain"
   ],
   "answer": 1,
   "explain": "BR is mist (from the French brume), tiny water droplets that reduce visibility less than fog; FG is fog and HZ is haze.",
   "volatile": false
  },
  {
   "id": "p107-112",
   "topic": "weather",
   "q": "Wind directions in a METAR are given in reference to:",
   "options": [
    "The pilot's position",
    "The runway in use",
    "True north",
    "Magnetic north"
   ],
   "answer": 2,
   "explain": "Written reports such as METARs and TAFs give wind direction from true north; ATIS and tower broadcasts use magnetic.",
   "volatile": false
  },
  {
   "id": "p107-113",
   "topic": "weather",
   "q": "A METAR shows \"VRB03KT\". This means:",
   "options": [
    "Visibility reduced by blowing dust",
    "Very rough air at 3,000 feet",
    "Wind from 030 degrees at variable speed",
    "Variable wind direction at 3 knots"
   ],
   "answer": 3,
   "explain": "VRB means the direction is variable, usually with light winds.",
   "volatile": false
  },
  {
   "id": "p107-114",
   "topic": "weather",
   "q": "In a TAF, \"FM1600\" means:",
   "options": [
    "Forecast valid for 16 hours",
    "A temporary change expected to last less than one hour in total",
    "Fog by 4 pm local time",
    "From 1600 UTC, a rapid change to the conditions that follow"
   ],
   "answer": 3,
   "explain": "FM (from) marks a rapid and lasting change starting at the given UTC time; TEMPO is a temporary change and BECMG a gradual one.",
   "volatile": false
  },
  {
   "id": "p107-115",
   "topic": "weather",
   "q": "In a METAR, \"AUTO\" means:",
   "options": [
    "Conditions are changing automatically and the report will be updated soon",
    "The report came from an automated station with no observer",
    "Winds are variable",
    "The report is a forecast"
   ],
   "answer": 1,
   "explain": "AUTO shows a fully automated report from an ASOS or AWOS without a human observer.",
   "volatile": false
  },
  {
   "id": "p107-116",
   "topic": "weather",
   "q": "The standard atmosphere at sea level has a temperature of:",
   "options": [
    "15 degrees F and 1,013 inches of mercury",
    "20 degrees C and 29.92 inches of mercury",
    "15 degrees C and 29.92 inches of mercury",
    "0 degrees C and 30.00 inches of mercury"
   ],
   "answer": 2,
   "explain": "The International Standard Atmosphere at sea level is 15 degrees C (59 degrees F) and 29.92 inches of mercury (1013.2 hPa).",
   "volatile": false
  },
  {
   "id": "p107-117",
   "topic": "weather",
   "q": "In the standard atmosphere, temperature falls by about:",
   "options": [
    "2 degrees C per 1,000 feet",
    "3 degrees F per 100 feet",
    "5 degrees C per 1,000 feet",
    "1 degree C per 100 feet"
   ],
   "answer": 0,
   "explain": "The standard lapse rate is about 2 degrees C (3.5 degrees F) per 1,000 feet.",
   "volatile": false
  },
  {
   "id": "p107-118",
   "topic": "weather",
   "q": "Which conditions give the highest density altitude?",
   "options": [
    "High elevation, cold and dry",
    "Low elevation, cold and dry",
    "Low elevation, hot and dry",
    "High elevation, hot and humid"
   ],
   "answer": 3,
   "explain": "Density altitude rises with elevation, temperature and humidity, which all make the air less dense.",
   "volatile": false
  },
  {
   "id": "p107-119",
   "topic": "weather",
   "q": "How does a high density altitude affect a drone?",
   "options": [
    "It only affects GPS accuracy",
    "More lift, because thin air gives the propellers less drag",
    "Less lift, so it needs more power and the battery drains faster",
    "No effect on electric motors"
   ],
   "answer": 2,
   "explain": "Thin air gives propellers less thrust, so motors work harder, climb is weaker and battery life drops.",
   "volatile": false
  },
  {
   "id": "p107-120",
   "topic": "weather",
   "q": "More humidity in the air makes density altitude:",
   "options": [
    "Lower in summer only",
    "Unchanged",
    "Higher, because moist air is less dense",
    "Lower, because water droplets make the air heavier"
   ],
   "answer": 2,
   "explain": "Water vapor is lighter than dry air, so humid air is less dense and density altitude goes up.",
   "volatile": false
  },
  {
   "id": "p107-121",
   "topic": "weather",
   "q": "Which is typical of stable air?",
   "options": [
    "Thunderstorms and hail",
    "Smooth air, stratiform clouds and poor visibility",
    "Cumulus clouds, turbulence and good visibility",
    "Showers and gusty winds"
   ],
   "answer": 1,
   "explain": "Stable air resists vertical motion: smooth air, layered clouds, steady precipitation and haze or fog. Unstable air gives cumuliform clouds, turbulence and good visibility.",
   "volatile": false
  },
  {
   "id": "p107-122",
   "topic": "weather",
   "q": "Which is typical of unstable air?",
   "options": [
    "Fog and poor visibility",
    "Stratus clouds and steady rain",
    "Smooth air and haze",
    "Cumuliform clouds and turbulence"
   ],
   "answer": 3,
   "explain": "Unstable air lifts easily, building cumuliform clouds, showery rain, turbulence and usually good visibility outside showers.",
   "volatile": false
  },
  {
   "id": "p107-123",
   "topic": "weather",
   "q": "A temperature inversion near the ground usually brings:",
   "options": [
    "Excellent visibility and strong, gusty surface winds",
    "Strong thunderstorms",
    "Severe turbulence",
    "Smooth air with poor visibility from haze or smoke"
   ],
   "answer": 3,
   "explain": "Temperature rising with height makes a stable layer that traps haze, smoke and fog near the ground.",
   "volatile": false
  },
  {
   "id": "p107-124",
   "topic": "weather",
   "q": "Which three things does a thunderstorm need to form?",
   "options": [
    "A front, fog and freezing rain",
    "Moisture, unstable air and a lifting force",
    "Dry air, sunshine and calm wind",
    "Wind, cold air and high pressure"
   ],
   "answer": 1,
   "explain": "Thunderstorms need sufficient water vapor, an unstable lapse rate and an initial lifting action.",
   "volatile": false
  },
  {
   "id": "p107-125",
   "topic": "weather",
   "q": "In which stage of a thunderstorm do updrafts dominate?",
   "options": [
    "The dissipating stage",
    "The cumulus stage",
    "The mature stage",
    "The anvil stage"
   ],
   "answer": 1,
   "explain": "The cumulus stage is mostly updrafts. The mature stage begins when rain reaches the ground; downdrafts dominate in the dissipating stage.",
   "volatile": false
  },
  {
   "id": "p107-126",
   "topic": "weather",
   "q": "The mature stage of a thunderstorm begins when:",
   "options": [
    "The anvil top dissolves",
    "Rain starts falling at the surface",
    "The first cumulus cloud forms",
    "Lightning stops"
   ],
   "answer": 1,
   "explain": "Precipitation reaching the surface marks the mature stage, with strong updrafts and downdrafts side by side.",
   "volatile": false
  },
  {
   "id": "p107-127",
   "topic": "weather",
   "q": "A microburst usually lasts:",
   "options": [
    "Less than 10 seconds",
    "About 2 hours, until the storm moves on",
    "All afternoon",
    "About 15 minutes or less"
   ],
   "answer": 3,
   "explain": "A microburst is an intense, short-lived downdraft that seldom lasts longer than about 15 minutes from first contact with the ground.",
   "volatile": false
  },
  {
   "id": "p107-128",
   "topic": "weather",
   "q": "Why is a microburst dangerous for a small drone?",
   "options": [
    "It only affects aircraft above 10,000 feet",
    "It creates icing on the propellers, even on a hot summer day",
    "Its downdraft and outflow can push it into the ground",
    "It makes GPS signals stronger"
   ],
   "answer": 2,
   "explain": "Microburst downdrafts can reach about 6,000 feet per minute, with strong horizontal outflow near the ground.",
   "volatile": false
  },
  {
   "id": "p107-129",
   "topic": "weather",
   "q": "A cold front passing through usually brings:",
   "options": [
    "Cumuliform clouds, showers, gusty winds and a wind shift",
    "Steady drizzle, low stratus and fog that last for several days",
    "Calm winds and clear skies all day",
    "A rise in temperature and fog"
   ],
   "answer": 0,
   "explain": "Cold fronts force warm air up quickly, giving cumulus clouds, showers or thunderstorms, gusts and a wind shift with cooler air behind.",
   "volatile": false
  },
  {
   "id": "p107-130",
   "topic": "weather",
   "q": "A warm front usually brings:",
   "options": [
    "Clear skies and dry air",
    "Hail and tornadoes",
    "Stratiform clouds, steady rain and poor visibility",
    "Short heavy showers, strong gusts and a sudden drop in temperature"
   ],
   "answer": 2,
   "explain": "Warm air rides gently over cold air ahead of a warm front, producing layered clouds and widespread steady precipitation.",
   "volatile": false
  },
  {
   "id": "p107-131",
   "topic": "weather",
   "q": "What is a reliable sign that a front has passed?",
   "options": [
    "The sun coming out",
    "A change in wind direction",
    "A rise in humidity only",
    "A clearer TAF"
   ],
   "answer": 1,
   "explain": "Wind shift and temperature change are the most reliable signs of frontal passage.",
   "volatile": false
  },
  {
   "id": "p107-132",
   "topic": "weather",
   "q": "Strong wind blows across a large warehouse. Where should you expect turbulence?",
   "options": [
    "Nowhere below 400 feet",
    "Only on the upwind side",
    "On the downwind side of the building",
    "Directly above the roof center only"
   ],
   "answer": 2,
   "explain": "Obstructions break up the wind flow and create gusts and eddies, strongest on the downwind (lee) side.",
   "volatile": false
  },
  {
   "id": "p107-133",
   "topic": "weather",
   "q": "Wind blows across a ridge. Where can a small drone be pushed down?",
   "options": [
    "On the upwind side of the ridge",
    "Directly above the windward slope",
    "Only in valleys facing the wind",
    "On the downwind side of the ridge"
   ],
   "answer": 3,
   "explain": "Air flowing over a ridge rises on the upwind side and sinks with turbulence on the lee side.",
   "volatile": false
  },
  {
   "id": "p107-134",
   "topic": "weather",
   "q": "On a sunny afternoon near the coast, the wind usually blows:",
   "options": [
    "Straight down from above",
    "From the sea toward the land",
    "Along the coast only",
    "From the land toward the sea"
   ],
   "answer": 1,
   "explain": "Land heats faster than water by day, so air rises over land and cooler sea air flows in: a sea breeze.",
   "volatile": false
  },
  {
   "id": "p107-135",
   "topic": "weather",
   "q": "Radiation fog forms most often:",
   "options": [
    "Only in mountains during snow",
    "On clear, calm nights over low-lying land",
    "When moist air moves over warmer water on a windy afternoon",
    "On windy afternoons"
   ],
   "answer": 1,
   "explain": "The ground cools by radiation on clear, calm nights until the air touching it reaches its dew point.",
   "volatile": false
  },
  {
   "id": "p107-136",
   "topic": "weather",
   "q": "Advection fog forms when:",
   "options": [
    "The ground cools on a calm night",
    "Air rises up a slope and cools",
    "Rain falls through a layer of cold air near the ground in winter",
    "Moist air moves over a colder surface"
   ],
   "answer": 3,
   "explain": "Advection fog is common along coasts where moist ocean air moves over cold water or land; it needs some wind and can be widespread.",
   "volatile": false
  },
  {
   "id": "p107-137",
   "topic": "weather",
   "q": "Structural icing on a drone needs:",
   "options": [
    "Visible moisture and a temperature at or below freezing",
    "Strong wind and dry air",
    "Clear air below 10 degrees C",
    "High humidity in clear air, at any temperature above 20 degrees C"
   ],
   "answer": 0,
   "explain": "Ice forms on airframes and propellers when the drone flies through visible moisture such as cloud or rain at or below 0 degrees C.",
   "volatile": false
  },
  {
   "id": "p107-138",
   "topic": "weather",
   "q": "Your drone was left outside overnight and has frost on the propellers. What should you do?",
   "options": [
    "Remove all frost before flight",
    "Only remove frost from the camera",
    "Fly: the motors will melt it",
    "Fly but stay below 100 feet"
   ],
   "answer": 0,
   "explain": "Frost roughens the propeller surface, disrupts airflow and reduces lift, so it must be removed before takeoff.",
   "volatile": false
  },
  {
   "id": "p107-139",
   "topic": "weather",
   "q": "Hail can fall:",
   "options": [
    "Several miles away from the thunderstorm, even in clear air",
    "Only above 10,000 feet",
    "Only directly under the core of the storm, never outside the cloud",
    "Only in winter"
   ],
   "answer": 0,
   "explain": "Hail can be thrown out of the storm top and fall miles from the cloud, sometimes into clear air.",
   "volatile": false
  },
  {
   "id": "p107-140",
   "topic": "weather",
   "q": "Which cloud brings the most dangerous weather for small aircraft?",
   "options": [
    "Cumulonimbus",
    "Stratus",
    "Altostratus",
    "Cirrus"
   ],
   "answer": 0,
   "explain": "Cumulonimbus clouds are thunderstorm clouds with turbulence, lightning, hail, icing and microbursts.",
   "volatile": false
  },
  {
   "id": "p107-141",
   "topic": "weather",
   "q": "Lens-shaped (lenticular) clouds over mountains warn of:",
   "options": [
    "Fog in the valleys",
    "A warm front",
    "Calm wind",
    "Mountain wave turbulence"
   ],
   "answer": 3,
   "explain": "Standing lenticular clouds form in mountain waves and point to strong winds and turbulence.",
   "volatile": false
  },
  {
   "id": "p107-142",
   "topic": "weather",
   "q": "The dew point is:",
   "options": [
    "The temperature of raindrops when they reach the ground",
    "The lowest temperature of the night",
    "The temperature at which air becomes saturated",
    "The humidity at noon"
   ],
   "answer": 2,
   "explain": "Cooling air to its dew point makes it saturated, so clouds, fog or dew can form.",
   "volatile": false
  },
  {
   "id": "p107-143",
   "topic": "weather",
   "q": "Cold weather affects a lithium drone battery by:",
   "options": [
    "Reducing its capacity and voltage",
    "Making it charge faster",
    "Having no effect",
    "Increasing its flight time"
   ],
   "answer": 0,
   "explain": "Low temperatures reduce the battery's usable capacity, so flight time is shorter and voltage can drop suddenly. Keep batteries warm before flight.",
   "volatile": false
  },
  {
   "id": "p107-144",
   "topic": "weather",
   "q": "Which official source gives aviation weather such as METARs, TAFs and SIGMETs?",
   "options": [
    "A local TV or radio weather report for your city",
    "The drone manufacturer's app",
    "The Aviation Weather Center (aviationweather.gov)",
    "The FAA DroneZone"
   ],
   "answer": 2,
   "explain": "The NWS Aviation Weather Center publishes official aviation weather products; Flight Service (1800wxbrief.com) gives briefings.",
   "volatile": false
  },
  {
   "id": "p107-145",
   "topic": "weather",
   "q": "A Convective SIGMET warns of:",
   "options": [
    "Thunderstorms and the hazards that come with them",
    "Changes to the runway lights at towered airports",
    "Light rain showers",
    "Fog at a single airport"
   ],
   "answer": 0,
   "explain": "Convective SIGMETs cover severe or embedded thunderstorms, lines of storms, tornadoes, large hail and strong surface winds.",
   "volatile": false
  },
  {
   "id": "p107-146",
   "topic": "weather",
   "q": "What are ASOS and AWOS?",
   "options": [
    "Automated surface weather stations",
    "Flight planning apps",
    "Air traffic control systems",
    "Drone remote ID systems"
   ],
   "answer": 0,
   "explain": "ASOS and AWOS are automated weather observing systems that report wind, visibility, clouds, temperature and pressure, often by radio and phone.",
   "volatile": false
  },
  {
   "id": "p107-147",
   "topic": "weather",
   "q": "Wind shear is:",
   "options": [
    "A sudden change in wind speed or direction over a short distance",
    "Wind that blows only at night",
    "Wind measured at the runway",
    "A steady, strong wind that blows only at high altitude in the jet stream"
   ],
   "answer": 0,
   "explain": "Wind shear can occur at any altitude, near thunderstorms, fronts, inversions and obstacles, and can upset a small drone.",
   "volatile": false
  },
  {
   "id": "p107-148",
   "topic": "loading",
   "q": "What happens to a fixed-wing drone if its center of gravity moves behind the aft limit?",
   "options": [
    "It becomes more stable and easier to fly",
    "It becomes less stable and harder to recover from a stall",
    "Its battery charges faster",
    "Its top speed rises a little and nothing else about its handling changes"
   ],
   "answer": 1,
   "explain": "An aft CG reduces longitudinal stability and makes stall and spin recovery harder.",
   "volatile": false
  },
  {
   "id": "p107-149",
   "topic": "loading",
   "q": "What happens when a fixed-wing drone's center of gravity is too far forward?",
   "options": [
    "It becomes unstable and pitches up sharply after takeoff",
    "Its stall speed falls",
    "It turns faster",
    "It becomes harder to raise the nose"
   ],
   "answer": 3,
   "explain": "A forward CG makes the aircraft nose-heavy, needing more elevator force and raising the stall speed.",
   "volatile": false
  },
  {
   "id": "p107-150",
   "topic": "loading",
   "q": "In a level 60-degree banked turn, the load factor is about:",
   "options": [
    "3 G",
    "2 G",
    "1 G",
    "1.5 G"
   ],
   "answer": 1,
   "explain": "Load factor in a level turn is 1 / cos(bank angle); cos 60 degrees = 0.5, so the load factor is 2.",
   "volatile": false
  },
  {
   "id": "p107-151",
   "topic": "loading",
   "q": "A 33-pound fixed-wing drone makes a level 60-degree banked turn. What load must its structure support?",
   "options": [
    "66 pounds",
    "49.5 pounds",
    "99 pounds",
    "33 pounds"
   ],
   "answer": 0,
   "explain": "At 60 degrees of bank the load factor is 2, so 33 x 2 = 66 pounds.",
   "volatile": false
  },
  {
   "id": "p107-152",
   "topic": "loading",
   "q": "A 10-pound fixed-wing drone makes a level 30-degree banked turn. The load is about:",
   "options": [
    "15 pounds",
    "20 pounds",
    "10 pounds",
    "11.5 pounds"
   ],
   "answer": 3,
   "explain": "Load factor at 30 degrees is 1 / cos 30 = about 1.154, so 10 x 1.154 = about 11.5 pounds.",
   "volatile": false
  },
  {
   "id": "p107-153",
   "topic": "loading",
   "q": "Your drone weighs 48 pounds and you attach an 8-pound sprayer tank. May you fly it under Part 107?",
   "options": [
    "Yes: only the drone's own weight counts",
    "No: 56 pounds is over the limit",
    "Yes, if you stay below 200 feet",
    "Yes, with a visual observer"
   ],
   "answer": 1,
   "explain": "The takeoff weight includes everything on board: 48 + 8 = 56 pounds, which is not less than 55.",
   "volatile": false
  },
  {
   "id": "p107-154",
   "topic": "loading",
   "q": "Your drone has an airspeed of 90 mph and a 15 mph tailwind. Is the flight within the Part 107 speed limit?",
   "options": [
    "Yes: the airspeed is under 100 mph",
    "No: the airspeed limit is 87 mph",
    "No: the groundspeed is 105 mph",
    "Yes: wind is not counted"
   ],
   "answer": 2,
   "explain": "Part 107 limits groundspeed to 100 mph (87 knots). With a tailwind, groundspeed = 90 + 15 = 105 mph.",
   "volatile": true
  },
  {
   "id": "p107-155",
   "topic": "loading",
   "q": "Adding a heavier payload to a multirotor drone usually:",
   "options": [
    "Shortens flight time and reduces climb performance",
    "Makes the drone more agile",
    "Increases battery life",
    "Has no effect on performance"
   ],
   "answer": 0,
   "explain": "More weight means the motors need more thrust to hover, draining the battery faster and leaving less power for climbing and wind.",
   "volatile": false
  },
  {
   "id": "p107-156",
   "topic": "loading",
   "q": "Where should you find the maximum takeoff weight and payload limits of your drone?",
   "options": [
    "In the Part 107 rule, which lists limits for each drone model",
    "In the METAR",
    "In the Chart Supplement",
    "In the manufacturer's performance data"
   ],
   "answer": 3,
   "explain": "Part 107 sets only the 55-pound class limit. Performance and weight limits for a specific drone come from the manufacturer.",
   "volatile": false
  },
  {
   "id": "p107-157",
   "topic": "loading",
   "q": "On a hot day at a high-elevation site, with a heavy camera attached, a pilot should:",
   "options": [
    "Fly faster to gain lift",
    "Fly as normal, because electric drones are not affected by density altitude",
    "Charge the battery to 120%",
    "Consider removing payload: lift and battery margin are lower"
   ],
   "answer": 3,
   "explain": "High density altitude reduces propeller thrust; extra weight cuts the margin further, so reduce weight or plan shorter flights.",
   "volatile": false
  },
  {
   "id": "p107-158",
   "topic": "loading",
   "q": "A fixed-wing drone stalls when:",
   "options": [
    "The wing exceeds its critical angle of attack",
    "The battery voltage drops",
    "It climbs above 400 feet",
    "Its airspeed drops below 30 mph, whatever the angle of attack"
   ],
   "answer": 0,
   "explain": "A stall happens whenever the critical angle of attack is exceeded, at any airspeed, attitude or power setting.",
   "volatile": false
  },
  {
   "id": "p107-159",
   "topic": "loading",
   "q": "What are the four forces acting on an aircraft in flight?",
   "options": [
    "Pitch, roll, yaw and lift",
    "Lift, gravity, wind and torque",
    "Lift, weight, thrust and drag",
    "Thrust, speed, power and weight"
   ],
   "answer": 2,
   "explain": "Lift opposes weight and thrust opposes drag; in steady unaccelerated flight they are in balance.",
   "volatile": false
  },
  {
   "id": "p107-160",
   "topic": "loading",
   "q": "The angle of attack is the angle between:",
   "options": [
    "The wing chord line and the relative wind",
    "The flight path and north",
    "The wing and the horizon",
    "The propeller and the ground"
   ],
   "answer": 0,
   "explain": "Angle of attack is measured between the chord line of the wing and the oncoming (relative) wind.",
   "volatile": false
  },
  {
   "id": "p107-161",
   "topic": "loading",
   "q": "How does a quadcopter turn (yaw) left or right?",
   "options": [
    "By changing the pitch of all four propellers at once",
    "By speeding up one pair of same-direction rotors",
    "With a rudder on its tail",
    "By tilting one arm"
   ],
   "answer": 1,
   "explain": "Speeding up one pair of rotors that spin in the same direction creates a torque imbalance that yaws the drone.",
   "volatile": false
  },
  {
   "id": "p107-162",
   "topic": "loading",
   "q": "Why does a fixed-wing drone need more power in a steep turn?",
   "options": [
    "Its weight drops in turns",
    "GPS uses more power in turns",
    "Its load factor rises, so the wing must produce more lift",
    "Turns reduce drag, but the motor must turn the propeller harder"
   ],
   "answer": 2,
   "explain": "In a banked turn part of the lift turns the aircraft, so total lift (and power) must rise to hold altitude.",
   "volatile": false
  },
  {
   "id": "p107-163",
   "topic": "loading",
   "q": "A higher load factor raises a fixed-wing drone's:",
   "options": [
    "Stall speed",
    "Maximum altitude",
    "Battery capacity",
    "Radio range"
   ],
   "answer": 0,
   "explain": "Stall speed increases with the square root of the load factor, so steep turns and pull-ups raise it.",
   "volatile": false
  },
  {
   "id": "p107-164",
   "topic": "loading",
   "q": "A payload hangs off-center under a multirotor. What is the likely effect?",
   "options": [
    "The drone gets more lift",
    "Nothing, because flight controllers ignore where the weight hangs",
    "The drone tilts or drifts and some motors work harder",
    "The drone flies more efficiently"
   ],
   "answer": 2,
   "explain": "An off-center load shifts the CG, so the flight controller drives some motors harder, reducing control margin and battery life.",
   "volatile": false
  },
  {
   "id": "p107-165",
   "topic": "loading",
   "q": "Before a flight with an attached object, 14 CFR 107.49 requires you to make sure:",
   "options": [
    "All attached objects are secure",
    "The object is painted orange",
    "The FAA has approved the object",
    "The object is under 1 pound"
   ],
   "answer": 0,
   "explain": "Part of the preflight under 107.49 is ensuring any object attached or carried is secure and does not affect flight characteristics or controllability.",
   "volatile": false
  },
  {
   "id": "p107-166",
   "topic": "loading",
   "q": "A chipped propeller on a multirotor will most likely:",
   "options": [
    "Make the drone quieter",
    "Reduce thrust and cause vibration",
    "Have no effect at low speed",
    "Increase lift"
   ],
   "answer": 1,
   "explain": "Damaged propellers lose efficiency and create imbalance and vibration that can damage motors and sensors. Replace them.",
   "volatile": false
  },
  {
   "id": "p107-167",
   "topic": "loading",
   "q": "Flying into a strong headwind on the way back affects a battery flight how?",
   "options": [
    "It has no effect on battery use",
    "It saves battery, because the wind helps cool the motors",
    "The trip home is slower and uses more battery",
    "It increases groundspeed"
   ],
   "answer": 2,
   "explain": "A headwind lowers groundspeed, so the trip home takes longer. Plan reserves for the return leg.",
   "volatile": false
  },
  {
   "id": "p107-168",
   "topic": "loading",
   "q": "A drone with a 25-minute battery uses 30% of its battery to fly 1 mile out with a tailwind. Why is it unwise to fly further out?",
   "options": [
    "Batteries recharge in flight",
    "The return will use less than 30%, because the drone is lighter",
    "Part 107 limits flights to 1 mile",
    "The headwind on the way back will use more than 30%"
   ],
   "answer": 3,
   "explain": "With a tailwind outbound, the return into the wind is slower and uses more energy; keep a large reserve.",
   "volatile": false
  },
  {
   "id": "p107-169",
   "topic": "ops",
   "q": "What is the CTAF?",
   "options": [
    "The tower frequency used at Class B and Class C airports only",
    "The drone registration code",
    "A weather report for the next 24 hours",
    "The frequency for self-announcing at a non-towered airport"
   ],
   "answer": 3,
   "explain": "The Common Traffic Advisory Frequency is used for self-announced traffic advisories at airports without an operating control tower.",
   "volatile": false
  },
  {
   "id": "p107-170",
   "topic": "ops",
   "q": "ATIS is:",
   "options": [
    "A recorded broadcast of airport weather and runway in use",
    "A frequency for talking directly to the tower controller about clearances",
    "A satellite navigation system",
    "A drone flight app"
   ],
   "answer": 0,
   "explain": "Automatic Terminal Information Service repeats noncontrol information such as weather, runway in use and NOTAMs at busier airports, labeled with a phonetic letter.",
   "volatile": false
  },
  {
   "id": "p107-171",
   "topic": "ops",
   "q": "UNICOM is:",
   "options": [
    "A non-government radio station giving airport advisories",
    "A weather satellite",
    "The FAA tower frequency",
    "An emergency frequency monitored by all ATC facilities in the US"
   ],
   "answer": 0,
   "explain": "UNICOM is a non-government air/ground station that may give airport information at certain airports; it is often the same frequency as the CTAF.",
   "volatile": false
  },
  {
   "id": "p107-172",
   "topic": "ops",
   "q": "In the phonetic alphabet, the letter N is spoken as:",
   "options": [
    "Nectar",
    "November",
    "Norway",
    "Nancy"
   ],
   "answer": 1,
   "explain": "The ICAO phonetic alphabet uses November for N.",
   "volatile": false
  },
  {
   "id": "p107-173",
   "topic": "ops",
   "q": "In the phonetic alphabet, the letter Q is spoken as:",
   "options": [
    "Quarter",
    "Quebec",
    "Quiet",
    "Queen"
   ],
   "answer": 1,
   "explain": "The ICAO phonetic alphabet uses Quebec for Q.",
   "volatile": false
  },
  {
   "id": "p107-174",
   "topic": "ops",
   "q": "How do pilots say the number 9 on the radio?",
   "options": [
    "Nine",
    "Niner",
    "Nina",
    "November"
   ],
   "answer": 1,
   "explain": "Pilots say \"niner\" to avoid confusing nine with five or with the German \"nein\".",
   "volatile": false
  },
  {
   "id": "p107-175",
   "topic": "ops",
   "q": "On the CTAF you hear: \"Cessna 123, left downwind runway 36.\" Where is that airplane?",
   "options": [
    "West of the runway, flying north",
    "West of the runway, flying south",
    "East of the runway, flying south",
    "On final, flying north"
   ],
   "answer": 1,
   "explain": "Runway 36 points north; left traffic puts the pattern on the west side; the downwind leg runs opposite the landing direction, so south.",
   "volatile": false
  },
  {
   "id": "p107-176",
   "topic": "ops",
   "q": "You hear: \"Piper 45X, on final, runway 9.\" Where is the airplane?",
   "options": [
    "West of the airport, flying east toward the runway",
    "North of the airport, flying south",
    "East of the airport, flying west",
    "Over the field, flying east"
   ],
   "answer": 0,
   "explain": "Runway 9 heads east (090), so an airplane on final approaches from the west.",
   "volatile": false
  },
  {
   "id": "p107-177",
   "topic": "ops",
   "q": "How would a pilot say an altitude of 1,500 feet on the radio?",
   "options": [
    "One five zero zero",
    "One point five thousand",
    "One thousand five hundred",
    "Fifteen hundred feet exactly"
   ],
   "answer": 2,
   "explain": "The AIM phraseology for altitudes up to 18,000 feet uses thousands and hundreds: \"one thousand five hundred\".",
   "volatile": false
  },
  {
   "id": "p107-178",
   "topic": "ops",
   "q": "Must a Part 107 remote pilot carry an aviation radio?",
   "options": [
    "Yes, above 200 feet",
    "Only in Class G airspace",
    "No, but listening to the CTAF near an airport helps",
    "Yes, on every flight, tuned to the nearest tower frequency"
   ],
   "answer": 2,
   "explain": "Part 107 does not require a radio. Monitoring the CTAF can help you know where manned traffic is.",
   "volatile": false
  },
  {
   "id": "p107-179",
   "topic": "ops",
   "q": "At a non-towered airport, a segmented circle on the field shows:",
   "options": [
    "The location of the fuel pump",
    "The tower frequency",
    "Where drones may take off",
    "The traffic pattern direction for each runway"
   ],
   "answer": 3,
   "explain": "A segmented circle holds the wind indicator and traffic pattern indicators that show the direction of turns.",
   "volatile": false
  },
  {
   "id": "p107-180",
   "topic": "ops",
   "q": "A wind sock that is fully extended means:",
   "options": [
    "A light wind blowing into the narrow end of the sock from behind",
    "Calm wind",
    "A strong wind blowing from the open end toward the narrow end",
    "The airport is closed"
   ],
   "answer": 2,
   "explain": "A wind sock points downwind: it extends from where the wind comes from toward where it goes; full extension means strong wind.",
   "volatile": false
  },
  {
   "id": "p107-181",
   "topic": "ops",
   "q": "What is a SIDA at an airport?",
   "options": [
    "A safe drone launch area",
    "A security area where only badged people may go",
    "A runway marking",
    "A weather briefing room"
   ],
   "answer": 1,
   "explain": "The Security Identification Display Area is a restricted airport area requiring an approved ID; drone crews must not enter without authorization.",
   "volatile": false
  },
  {
   "id": "p107-182",
   "topic": "ops",
   "q": "Hawks or other birds start diving at your drone. What is the best action?",
   "options": [
    "Chase the birds away with the drone",
    "Hover in place until the birds leave",
    "Climb or move away and land if the birds keep attacking",
    "Fly toward their nest to scare them off and protect your drone"
   ],
   "answer": 2,
   "explain": "Birds may see drones as threats or prey. Avoid them and land if needed; never harass wildlife.",
   "volatile": false
  },
  {
   "id": "p107-183",
   "topic": "ops",
   "q": "A lithium polymer drone battery is swollen (puffy). What should you do?",
   "options": [
    "Fly it once more to drain it",
    "Charge it slowly to fix it",
    "Stop using it and dispose of it safely",
    "Press it flat again and keep using it for short flights only"
   ],
   "answer": 2,
   "explain": "A swollen lithium battery is damaged and can catch fire. Do not fly or charge it; recycle it according to local rules.",
   "volatile": false
  },
  {
   "id": "p107-184",
   "topic": "ops",
   "q": "What is the safest way to charge lithium drone batteries?",
   "options": [
    "In a hot car on the way to the job",
    "On a non-flammable surface, attended, with the right charger",
    "With any USB charger you have, as long as it is a fast charger",
    "Overnight under your bed"
   ],
   "answer": 1,
   "explain": "Lithium batteries can enter thermal runaway; charge them where a fire cannot spread, never unattended, using the manufacturer's charger.",
   "volatile": false
  },
  {
   "id": "p107-185",
   "topic": "ops",
   "q": "How should spare lithium drone batteries travel on a passenger airliner?",
   "options": [
    "In carry-on baggage, with terminals protected",
    "Loose in checked baggage",
    "In checked baggage only",
    "They may never travel on any passenger airliner in the US"
   ],
   "answer": 0,
   "explain": "FAA PackSafe rules require spare lithium batteries in carry-on bags, protected from short circuits.",
   "volatile": false
  },
  {
   "id": "p107-186",
   "topic": "ops",
   "q": "What should you set before every flight in case the control link is lost?",
   "options": [
    "The camera resolution",
    "The maximum speed to 100 mph so it gets home before the battery runs out",
    "A return-to-home altitude above the obstacles on the route",
    "The drone's registration number"
   ],
   "answer": 2,
   "explain": "Many drones fly home automatically after a lost link; the return altitude must clear trees, buildings and wires on the way.",
   "volatile": false
  },
  {
   "id": "p107-187",
   "topic": "ops",
   "q": "Your drone flies away and may enter Class D airspace. What should you do?",
   "options": [
    "Nothing, it is now out of your control",
    "Contact the ATC facility to tell them",
    "Only report it the next day",
    "Wait and see if it comes back"
   ],
   "answer": 1,
   "explain": "If a lost drone may enter controlled airspace or affect manned aircraft, notify ATC right away so it can warn traffic.",
   "volatile": false
  },
  {
   "id": "p107-188",
   "topic": "ops",
   "q": "If a drone loses its GPS signal, the pilot should expect:",
   "options": [
    "The drone to land at once in all cases",
    "The drone to hover perfectly still",
    "Better position hold",
    "Drift in the wind and the need to fly manually"
   ],
   "answer": 3,
   "explain": "Without GPS many drones switch to an attitude mode with no position hold; they drift with the wind and need manual control.",
   "volatile": false
  },
  {
   "id": "p107-189",
   "topic": "ops",
   "q": "You fly in a city with many Wi-Fi networks. What may happen to your 2.4 GHz control link?",
   "options": [
    "Its range may drop because of interference",
    "Nothing, because drones use their own protected military bands",
    "It switches to ADS-B",
    "Its range will double"
   ],
   "answer": 0,
   "explain": "Drones commonly share the 2.4 and 5.8 GHz bands with Wi-Fi and other devices, so crowded spectrum can shorten range.",
   "volatile": false
  },
  {
   "id": "p107-190",
   "topic": "ops",
   "q": "Which should be in the preflight briefing for crew members?",
   "options": [
    "The pilot's salary",
    "The METAR of a distant airport",
    "Last month's flight logs and the drone's full maintenance history",
    "The emergency procedures, such as a lost link or fly-away"
   ],
   "answer": 3,
   "explain": "14 CFR 107.49 requires briefing all persons involved on operating conditions, emergency procedures, contingencies, roles and hazards.",
   "volatile": false
  },
  {
   "id": "p107-191",
   "topic": "ops",
   "q": "Which hazardous attitude is \"Don't tell me what to do\"?",
   "options": [
    "Macho",
    "Anti-authority",
    "Resignation",
    "Impulsivity"
   ],
   "answer": 1,
   "explain": "The antidote to anti-authority is: \"Follow the rules. They are usually right.\"",
   "volatile": false
  },
  {
   "id": "p107-192",
   "topic": "ops",
   "q": "What is the antidote to the impulsivity attitude?",
   "options": [
    "Not so fast. Think first.",
    "It could happen to me.",
    "Taking chances is foolish.",
    "I'm not helpless."
   ],
   "answer": 0,
   "explain": "Impulsivity (\"Do something quickly!\") is countered by stopping to think first.",
   "volatile": false
  },
  {
   "id": "p107-193",
   "topic": "ops",
   "q": "A pilot thinks \"Accidents happen to other people, not to me.\" Which hazardous attitude is this?",
   "options": [
    "Anti-authority",
    "Invulnerability",
    "Macho",
    "Resignation"
   ],
   "answer": 1,
   "explain": "The antidote to invulnerability is: \"It could happen to me.\"",
   "volatile": false
  },
  {
   "id": "p107-194",
   "topic": "ops",
   "q": "A pilot flies close to a building to impress a client. Which hazardous attitude is this?",
   "options": [
    "Anti-authority",
    "Resignation",
    "Impulsivity",
    "Macho"
   ],
   "answer": 3,
   "explain": "Macho is trying to prove oneself by taking risks; the antidote is \"Taking chances is foolish.\"",
   "volatile": false
  },
  {
   "id": "p107-195",
   "topic": "ops",
   "q": "A pilot says \"What's the use, nothing I do will help.\" Which attitude is this, and its antidote?",
   "options": [
    "Invulnerability: \"It could happen to me.\"",
    "Resignation: \"I'm not helpless. I can make a difference.\"",
    "Impulsivity: \"Not so fast. Think first.\"",
    "Anti-authority: \"Follow the rules. They are usually right.\""
   ],
   "answer": 1,
   "explain": "Resignation leaves the outcome to luck; the antidote reminds the pilot to act.",
   "volatile": false
  },
  {
   "id": "p107-196",
   "topic": "ops",
   "q": "The IMSAFE checklist is used to check:",
   "options": [
    "Whether the airspace above the site is clear of manned traffic",
    "Whether the drone is airworthy",
    "Whether the pilot is fit to fly",
    "Whether the weather is legal"
   ],
   "answer": 2,
   "explain": "IMSAFE stands for Illness, Medication, Stress, Alcohol, Fatigue and Emotion (or Eating).",
   "volatile": false
  },
  {
   "id": "p107-197",
   "topic": "ops",
   "q": "In the PAVE risk checklist, what does the E stand for?",
   "options": [
    "Engine",
    "Equipment",
    "Emergency",
    "External pressures"
   ],
   "answer": 3,
   "explain": "PAVE: Pilot, Aircraft, enVironment, External pressures such as deadlines or a client waiting.",
   "volatile": false
  },
  {
   "id": "p107-198",
   "topic": "ops",
   "q": "A client pushes you to finish a shoot before a storm arrives. Which PAVE item is this?",
   "options": [
    "External pressures",
    "Pilot",
    "Aircraft",
    "Environment"
   ],
   "answer": 0,
   "explain": "Pressure from clients, schedules or money is an external pressure and a common cause of poor decisions (\"get-there-itis\").",
   "volatile": false
  },
  {
   "id": "p107-199",
   "topic": "ops",
   "q": "The DECIDE model starts with:",
   "options": [
    "Do the necessary action",
    "Delegate to the visual observer",
    "Detect that a change has occurred",
    "Decide on the best action"
   ],
   "answer": 2,
   "explain": "DECIDE: Detect, Estimate, Choose, Identify, Do, Evaluate.",
   "volatile": false
  },
  {
   "id": "p107-200",
   "topic": "ops",
   "q": "Crew Resource Management (CRM) for drone teams means:",
   "options": [
    "Letting the visual observer fly",
    "Flying without a crew",
    "Using all people, equipment and information to fly safely",
    "Hiring a larger crew so that every task has its own person"
   ],
   "answer": 2,
   "explain": "CRM is the effective use of all available resources, including clear communication with visual observers and other crew.",
   "volatile": false
  },
  {
   "id": "p107-201",
   "topic": "ops",
   "q": "Situational awareness means:",
   "options": [
    "Accurately knowing what is happening around the flight",
    "Memorizing the checklist",
    "Knowing the drone's serial number",
    "Watching only the video screen so you never lose the image"
   ],
   "answer": 0,
   "explain": "It is the accurate perception of the factors and conditions that affect safety before, during and after the flight.",
   "volatile": false
  },
  {
   "id": "p107-202",
   "topic": "ops",
   "q": "In a risk assessment matrix, risk is judged by combining:",
   "options": [
    "Weight and wind",
    "Cost and time",
    "Likelihood and severity",
    "Altitude and speed"
   ],
   "answer": 2,
   "explain": "The FAA risk matrix rates how likely a hazard is and how bad the outcome would be.",
   "volatile": false
  },
  {
   "id": "p107-203",
   "topic": "ops",
   "q": "An over-reliance on automation that leads to missed problems is called:",
   "options": [
    "Resignation",
    "Complacency",
    "Hyperventilation",
    "Spatial disorientation"
   ],
   "answer": 1,
   "explain": "Complacency lowers vigilance; pilots must keep monitoring the drone and be ready to fly manually.",
   "volatile": false
  },
  {
   "id": "p107-204",
   "topic": "ops",
   "q": "Which is a sign of dehydration when flying on a hot day?",
   "options": [
    "Feeling cold and shivering",
    "Sharper night vision",
    "Better concentration",
    "Headache, fatigue and dizziness"
   ],
   "answer": 3,
   "explain": "Dehydration causes headache, fatigue, cramps, dizziness and poor judgment. Drink water regularly.",
   "volatile": false
  },
  {
   "id": "p107-205",
   "topic": "ops",
   "q": "What can prevent heatstroke during long summer operations?",
   "options": [
    "Wearing dark heavy clothes",
    "Drinking water, taking shade breaks and wearing a hat",
    "Drinking coffee instead of water",
    "Working without breaks so the job is finished before the hottest hours"
   ],
   "answer": 1,
   "explain": "Heatstroke happens when the body cannot control its temperature; fluids, shade and light clothing help prevent it.",
   "volatile": false
  },
  {
   "id": "p107-206",
   "topic": "ops",
   "q": "A stressed crew member breathes fast and feels tingling and lightheaded. What is happening?",
   "options": [
    "Dehydration only",
    "Carbon monoxide poisoning",
    "Hypoxia from altitude",
    "Hyperventilation"
   ],
   "answer": 3,
   "explain": "Hyperventilation is breathing out too much carbon dioxide; slowing the breathing rate or talking aloud helps.",
   "volatile": false
  },
  {
   "id": "p107-207",
   "topic": "ops",
   "q": "Before flying after taking an over-the-counter antihistamine, you should:",
   "options": [
    "Fly normally, OTC drugs are fine",
    "Fly only below 200 feet",
    "Check if it causes drowsiness and not fly if impaired",
    "Drink a strong coffee first to cancel out any drowsiness"
   ],
   "answer": 2,
   "explain": "Many cold and allergy medicines cause drowsiness. 14 CFR 107.17 and 91.17 bar flying while impaired.",
   "volatile": false
  },
  {
   "id": "p107-208",
   "topic": "ops",
   "q": "At night, how should you look at a dim light to see it best?",
   "options": [
    "Look slightly to one side of it",
    "Stare straight at it",
    "Close one eye",
    "Look at it through the screen"
   ],
   "answer": 0,
   "explain": "The center of the eye has few rods; off-center viewing puts the image on the rods that work in dim light.",
   "volatile": false
  },
  {
   "id": "p107-209",
   "topic": "ops",
   "q": "How long does it take for the eyes to fully adapt to darkness?",
   "options": [
    "About 3 hours",
    "About 1 minute",
    "About 5 minutes",
    "About 30 minutes"
   ],
   "answer": 3,
   "explain": "Rods need about 30 minutes in the dark to adapt fully; bright light ruins it in seconds.",
   "volatile": false
  },
  {
   "id": "p107-210",
   "topic": "ops",
   "q": "At night, a single steady light you stare at seems to move. This illusion is called:",
   "options": [
    "Autokinesis",
    "Hypoxia",
    "Hyperventilation",
    "Vertigo"
   ],
   "answer": 0,
   "explain": "Autokinesis makes a stationary light appear to move after a few seconds of staring. Keep your eyes moving.",
   "volatile": false
  },
  {
   "id": "p107-211",
   "topic": "ops",
   "q": "The FAA recommended way to scan the sky for traffic during the day is:",
   "options": [
    "Short eye movements, about 10 degrees each, pausing about 1 second",
    "Looking only at the drone's screen",
    "One long, continuous sweep from the left horizon to the right horizon",
    "Staring at the center of the sky"
   ],
   "answer": 0,
   "explain": "The eyes need about 1 second to focus; scanning in about 10-degree steps lets you detect traffic.",
   "volatile": false
  },
  {
   "id": "p107-212",
   "topic": "ops",
   "q": "Under Part 107, who may perform maintenance on a small UAS?",
   "options": [
    "Only an FAA-certificated mechanic with an airframe and powerplant rating",
    "The remote PIC or others, using the manufacturer's instructions",
    "Nobody: drones may not be repaired",
    "Only the FAA"
   ],
   "answer": 1,
   "explain": "Part 107 has no mechanic requirement; FAA guidance says to follow the manufacturer's maintenance instructions and record the work.",
   "volatile": false
  },
  {
   "id": "p107-213",
   "topic": "ops",
   "q": "Why keep maintenance and flight records for a drone?",
   "options": [
    "They help spot trends and problems before failures",
    "They are needed to renew the FAA registration every three years",
    "They are needed for Remote ID",
    "They replace preflight checks"
   ],
   "answer": 0,
   "explain": "Records of flight hours, repairs and parts help identify recurring issues and plan scheduled maintenance.",
   "volatile": false
  },
  {
   "id": "p107-214",
   "topic": "ops",
   "q": "Which is part of a good preflight inspection?",
   "options": [
    "Checking propellers for cracks and the battery for damage",
    "Updating the flight app and posting the plan on social media",
    "Calling the FAA",
    "Filing a flight plan"
   ],
   "answer": 0,
   "explain": "Inspect the airframe, propellers, motors, battery and connections before each flight.",
   "volatile": false
  },
  {
   "id": "p107-215",
   "topic": "ops",
   "q": "An operator replaces the original props on a Category 2 drone with other props. What could happen?",
   "options": [
    "Nothing, props do not matter",
    "It automatically becomes a Category 4 drone with no extra steps",
    "It no longer needs registration",
    "The drone may no longer meet its declaration of compliance"
   ],
   "answer": 3,
   "explain": "Modifying a Category 2 or 3 drone may change its impact energy or rotating-parts safety, so it may no longer be eligible for that category.",
   "volatile": true
  },
  {
   "id": "p107-216",
   "topic": "ops",
   "q": "During a night preflight, what must you check in addition to the daytime items?",
   "options": [
    "That the camera has night mode",
    "That the battery is warm",
    "That ATC has been informed of every night flight by phone",
    "That the anti-collision lights work and are visible"
   ],
   "answer": 3,
   "explain": "Night operations need working anti-collision lighting visible for 3 statute miles, so check it before flight.",
   "volatile": true
  },
  {
   "id": "p107-217",
   "topic": "ops",
   "q": "When should you install a drone firmware update?",
   "options": [
    "Never, because updates always make the drone unsafe to fly",
    "Only after a crash",
    "Before the flight day, then test it, not just before a job",
    "In flight, when prompted"
   ],
   "answer": 2,
   "explain": "Updates can change flight behavior; install and test them well before an important operation.",
   "volatile": false
  },
  {
   "id": "p107-218",
   "topic": "ops",
   "q": "At night, you see a white light on a manned aircraft that appears steady. It is most likely:",
   "options": [
    "A drone's Remote ID signal",
    "A red anti-collision beacon",
    "The tail position light, so the aircraft is moving away",
    "A landing light on an aircraft that is coming straight toward you"
   ],
   "answer": 2,
   "explain": "The steady white position light is on the tail; seeing only white means the aircraft is heading away from you.",
   "volatile": false
  },
  {
   "id": "p107-219",
   "topic": "ops",
   "q": "Fatigue that builds up over days of poor sleep and long workdays is called:",
   "options": [
    "Hypoxia",
    "Acute fatigue",
    "Spatial disorientation",
    "Chronic fatigue"
   ],
   "answer": 3,
   "explain": "Acute fatigue is short-term and recovers with rest; chronic fatigue builds up over time and needs longer recovery.",
   "volatile": false
  }
 ]
}