Free Part 107 practice

Part 107 regulations practice questions (set 1)

27 questions on Regulations from the FAA Airman Certification Standards. Try each one, then open the answer to see the explanation and the FAA source it comes from.

Question 1

According to AC 107-2A, which of these operations is covered by 14 CFR part 107?

  1. A. A paid aerial photo from a camera on a moored balloon in Texas
  2. B. A paid roof inspection in Texas with a 20-pound small UA
  3. C. A paid roof inspection in Mexico with a 20-pound small UA
Show the answer and explanation

Answer: B. A paid roof inspection in Texas with a 20-pound small UA

Part 107 applies to the operation of civil small UAS within the United States. AC 107-2A lists operations Part 107 does not cover, including operations outside the United States, amateur rockets, and moored balloons.

Why the other choices are wrong

  • A. A paid aerial photo from a camera on a moored balloon in Texas AC 107-2A lists moored balloons among the operations Part 107 does not cover.
  • C. A paid roof inspection in Mexico with a 20-pound small UA Part 107 applies within the United States. AC 107-2A lists operations outside the United States as not covered.

FAA source

Question 2

According to 14 CFR part 107, what does a small unmanned aircraft system (small UAS) include?

  1. A. The aircraft and its payload, but not its control station
  2. B. The aircraft, its communication links, and its controls
  3. C. The aircraft, its remote PIC, and any visual observers
Show the answer and explanation

Answer: B. The aircraft, its communication links, and its controls

§ 107.3 defines a small UAS as a small unmanned aircraft and its associated elements, including communication links and the components that control the aircraft, that are required for its safe and efficient operation. The control station, the interface the remote pilot uses to control the flight path, is one of those components.

Why the other choices are wrong

  • A. The aircraft and its payload, but not its control station The definition includes the components that control the aircraft, and the control station is one of them.
  • C. The aircraft, its remote PIC, and any visual observers The definition lists the aircraft and its associated equipment, not the people who fly or watch it.

FAA source

Question 3

A remote pilot fraudulently alters the issue date on a remote pilot certificate but has not yet used it. According to 14 CFR part 3, which statement about this act is correct?

  1. A. It can be a basis for suspending or revoking the pilot's certificates.
  2. B. It is not a violation until the pilot uses the altered certificate.
  3. C. It can be a basis for a civil penalty, but not for action on a certificate.
Show the answer and explanation

Answer: A. It can be a basis for suspending or revoking the pilot's certificates.

Section 3.403(b) prohibits producing, reproducing, or altering a certificate for a fraudulent purpose, so the alteration itself is the violation. Under § 3.403(d), the act is a basis for denying, suspending, modifying, or revoking any certificate the person holds, or for a civil penalty. Section 3.401(a) applies these rules to persons subject to subchapter F of 14 CFR, which contains Part 107.

Why the other choices are wrong

  • B. It is not a violation until the pilot uses the altered certificate. Section 3.403(b) prohibits the fraudulent alteration itself, so the act is already a violation before the certificate is used.
  • C. It can be a basis for a civil penalty, but not for action on a certificate. Section 3.403(d) allows either action against certificates the person holds or a civil penalty, so certificate action is available.

FAA source

Question 4

According to AC 107-2A, how may a remote PIC submit a required Part 107 accident report to the FAA?

  1. A. In writing to the NTSB, which then forwards it to the FAA
  2. B. Electronically or by phone to an FAA Regional Operations Center
  3. C. Through the LAANC service provider that approved the flight
Show the answer and explanation

Answer: B. Electronically or by phone to an FAA Regional Operations Center

AC 107-2A says the accident report may be submitted to the appropriate FAA Regional Operations Center electronically or by telephone, or to the responsible Flight Standards office. Reporting to the NTSB, when its criteria are met, is in addition to the report to the FAA.

Why the other choices are wrong

  • A. In writing to the NTSB, which then forwards it to the FAA NTSB reporting, when its criteria are met, is in addition to the FAA report, not a way of filing it.
  • C. Through the LAANC service provider that approved the flight AC 107-2A does not list a LAANC provider as a way to submit an accident report.

FAA source

Question 5

During a Part 107 flight in a city park, a local police officer asks the remote PIC to show a remote pilot certificate. What does Part 107 require of the remote PIC?

  1. A. Present the certificate and identification for inspection.
  2. B. Decline, since only the FAA may ask to inspect the certificate.
  3. C. Show the aircraft registration, since the certificate may stay at home.
Show the answer and explanation

Answer: A. Present the certificate and identification for inspection.

A remote PIC must have the remote pilot certificate and identification in physical possession and readily accessible when exercising its privileges. Section 107.7 requires presenting them for inspection when the FAA, an authorized NTSB or TSA representative, or any Federal, State, or local law enforcement officer asks.

Why the other choices are wrong

  • B. Decline, since only the FAA may ask to inspect the certificate. The rule also covers NTSB and TSA representatives and any Federal, State, or local law enforcement officer, not only the FAA.
  • C. Show the aircraft registration, since the certificate may stay at home. The remote PIC must have the certificate in physical possession and readily accessible while exercising its privileges, so leaving it at home does not comply.

FAA source

Question 6

According to 14 CFR part 107, when may one small UAS be eligible for more than one category of operations over people?

  1. A. When it holds a separate airworthiness certificate for each category
  2. B. When its label shows only the highest category it qualifies for
  3. C. When the remote PIC cannot switch its modes or configurations by accident
Show the answer and explanation

Answer: C. When the remote PIC cannot switch its modes or configurations by accident

§ 107.150 says a small UAS may be eligible for one or more categories of operations over people, as long as the remote PIC cannot inadvertently switch between modes or configurations. For Category 2 and Category 3, AC 107-2A adds that the aircraft must display a label showing the category or categories for which it is eligible.

Why the other choices are wrong

  • A. When it holds a separate airworthiness certificate for each category An airworthiness certificate is the Category 4 requirement, and the rule doesn't call for one per category.
  • B. When its label shows only the highest category it qualifies for A Category 2 or 3 label must show the category or categories the aircraft is eligible for, not just one of them.

FAA source

Question 7

A company's means of compliance for Category 2 aircraft has been accepted by the FAA. How long must the company keep the detailed description of that means of compliance and its justification?

  1. A. For 2 years after the FAA accepts it
  2. B. Until the first declaration that uses it is accepted
  3. C. For as long as the means of compliance remains accepted
Show the answer and explanation

Answer: C. For as long as the means of compliance remains accepted

A person who submits a means of compliance must keep, and make available to the FAA on request, the detailed description of the means of compliance and its justification, for as long as the means of compliance remains accepted. The 2-year retention periods apply to people who submit declarations of compliance.

Why the other choices are wrong

  • A. For 2 years after the FAA accepts it The 2-year periods apply to people who submit declarations of compliance, not to an accepted means of compliance.
  • B. Until the first declaration that uses it is accepted There is no such end point. The records must be kept as long as the means of compliance stays accepted.

FAA source

Question 8

A company owns three small UA that it flies only under Part 107. According to the AIM, how are they registered under 14 CFR part 48?

  1. A. With one registration number that covers all three aircraft
  2. B. Only the ones that weigh more than 0.55 pounds
  3. C. Each one separately, and each gets a different number
Show the answer and explanation

Answer: C. Each one separately, and each gets a different number

Under Part 107, every small UA must be registered regardless of weight. The AIM says Part 107 registration fees are per aircraft and each registered aircraft gets a different number, while a recreational flyer gets one number for all the aircraft that person flies.

Why the other choices are wrong

  • A. With one registration number that covers all three aircraft One number for all of an owner's aircraft is how recreational flyer registration works, not Part 107 registration.
  • B. Only the ones that weigh more than 0.55 pounds Under Part 107, every small UA must be registered regardless of weight.

FAA source

Question 9

According to 14 CFR part 107, which method lets a remote PIC meet the visual line of sight requirement?

  1. A. Watching the aircraft while wearing prescription eyeglasses.
  2. B. Following the aircraft through binoculars for the whole flight.
  3. C. Watching a live camera feed from the aircraft on a screen.
Show the answer and explanation

Answer: A. Watching the aircraft while wearing prescription eyeglasses.

Section 107.31 requires seeing the aircraft with vision unaided by any device other than corrective lenses, which § 107.3 defines as spectacles or contact lenses. AC 107-2A adds that binoculars may be used only momentarily and that first-person view devices do not satisfy the VLOS requirement.

Why the other choices are wrong

  • B. Following the aircraft through binoculars for the whole flight. Binoculars may be used only momentarily; visual line of sight must otherwise be kept with unaided vision.
  • C. Watching a live camera feed from the aircraft on a screen. A first-person view feed may be used during operations, but it does not satisfy the visual line of sight requirement.

FAA source

Question 10

When a visual observer is used, who must ensure the VO is able to see the small UA as Part 107 requires?

  1. A. The visual observer, by keeping the aircraft in view
  2. B. The remote PIC, who can do it by choosing where the VO stands
  3. C. The person manipulating the controls, if not the remote PIC
Show the answer and explanation

Answer: B. The remote PIC, who can do it by choosing where the VO stands

§ 107.33(b) requires the remote PIC to ensure that the visual observer is able to see the unmanned aircraft in the manner § 107.31 specifies. AC 107-2A says the remote PIC can do this by specifying the location of the VO.

Why the other choices are wrong

  • A. The visual observer, by keeping the aircraft in view The VO must be able to see the aircraft, but the rule makes the remote PIC responsible for ensuring it.
  • C. The person manipulating the controls, if not the remote PIC The person manipulating the controls coordinates with the VO, but the rule places this duty on the remote PIC.

FAA source

Question 11

14 CFR part 107 bars a small UA from carrying hazardous material. Where does the rule say that term is defined?

  1. A. In 14 CFR part 1
  2. B. In 49 CFR 171.8
  3. C. In AC 107-2A
Show the answer and explanation

Answer: B. In 49 CFR 171.8

Part 107 says a small unmanned aircraft may not carry hazardous material, and it defines the term by pointing to 49 CFR 171.8.

Why the other choices are wrong

  • A. In 14 CFR part 1 Part 107 points to 49 CFR 171.8 for this definition, not to the definitions in 14 CFR part 1.
  • C. In AC 107-2A Part 107 points to 49 CFR 171.8 for this definition, not to AC 107-2A.

FAA source

Question 12

A remote PIC needs prior authorization to fly in Class D airspace near a towered airport. According to the AIM, how should the remote PIC request it?

  1. A. By radio call to the tower just before launch
  2. B. By telephone to the tower that morning
  3. C. Through LAANC or the FAA DroneZone website
Show the answer and explanation

Answer: C. Through LAANC or the FAA DroneZone website

§ 107.41 requires prior ATC authorization to operate in Class D airspace. The AIM says Part 107 operators request these authorizations through LAANC or DroneZone, that authorizations are not coordinated verbally with ATC, and that small UAS operators should not contact ATC directly by radio or telephone for airspace access.

Why the other choices are wrong

  • A. By radio call to the tower just before launch The AIM says small UAS operators should not contact ATC directly by radio or telephone for airspace access.
  • B. By telephone to the tower that morning Authorizations aren't arranged by phone; they are handled through processes such as LAANC and DroneZone.

FAA source

Question 13

A remote PIC plans to fly over a farm field 2 miles from a small airport. The field and the airport are in Class G airspace. Which statement about the flight is correct under Part 107?

  1. A. No notice is needed, and Part 107 sets no rules for flying near airports
  2. B. Prior authorization is needed from the nearest ATC facility
  3. C. No notice is needed, but the UA must not interfere with airport traffic
Show the answer and explanation

Answer: C. No notice is needed, but the UA must not interfere with airport traffic

AC 107-2A says that unless the flight is in controlled airspace, no notification or authorization is needed to operate a small UA at or near an airport. § 107.41 requires ATC authorization for Class B, C, or D airspace or a Class E surface area, while § 107.43 still prohibits interfering with operations and traffic patterns at any airport.

Why the other choices are wrong

  • A. No notice is needed, and Part 107 sets no rules for flying near airports No notice is needed here, but § 107.43 still prohibits interfering with operations and traffic patterns at any airport.
  • B. Prior authorization is needed from the nearest ATC facility ATC authorization is required for Class B, C, or D airspace or a Class E surface area, not for Class G airspace.

FAA source

Question 14

According to the AIM, what makes entering a restricted area without permission so hazardous?

  1. A. The area surrounds a busy airport where airliners arrive and depart
  2. B. The area protects a wildlife refuge where low-flying aircraft disturb animals
  3. C. The area may contain unseen artillery fire or guided missile activity
Show the answer and explanation

Answer: C. The area may contain unseen artillery fire or guided missile activity

The AIM says restricted areas denote the existence of unusual, often invisible hazards to aircraft, such as artillery firing, aerial gunnery, or guided missiles, and that entering one without authorization from the using or controlling agency may be extremely hazardous. § 107.45 requires that permission before a small UA operates in a restricted area.

Why the other choices are wrong

  • A. The area surrounds a busy airport where airliners arrive and depart Airspace around the busiest airports is controlled airspace such as Class B, not a restricted area.
  • B. The area protects a wildlife refuge where low-flying aircraft disturb animals Restricted areas denote hazards such as artillery firing; the AIM covers wildlife refuges separately, asking pilots to stay at least 2,000 feet above them.

FAA source

Question 15

Part 107 makes remote PICs follow the part 91 rules on flight restrictions set by NOTAM. Under those rules, what airspace does a TFR for a major sporting event normally cover?

  1. A. A 1 NM radius up to 1,000 feet above the surface
  2. B. A 3 NM radius up to 2,500 feet above the surface
  3. C. A 5 NM radius up to 17,000 feet MSL
Show the answer and explanation

Answer: B. A 3 NM radius up to 2,500 feet above the surface

Part 107 requires remote PICs to comply with §§ 91.137 through 91.145. Under § 91.145, a TFR for a major sporting event is normally limited to a 3 nautical mile radius from the center of the event and 2,500 feet above the surface, and no larger than the minimum airspace needed. The NOTAM states the exact limits.

Why the other choices are wrong

  • A. A 1 NM radius up to 1,000 feet above the surface Part 91 says a sporting event TFR is normally limited to a 3 NM radius and 2,500 feet above the surface.
  • C. A 5 NM radius up to 17,000 feet MSL That is the normal size for an aerial demonstration TFR with high-performance aircraft, not a sporting event.

FAA source

Question 16

According to 14 CFR part 107, how often must the remote PIC check whether the small UAS is in a condition for safe operation?

  1. A. Before each flight
  2. B. Before the first flight of each day
  3. C. At the intervals the manufacturer sets
Show the answer and explanation

Answer: A. Before each flight

§ 107.15(a) prohibits operating a civil small UAS unless it is in a condition for safe operation, and requires the remote PIC to check it prior to each flight to determine whether it is. AC 107-2A restates that these checks are performed before each flight.

Why the other choices are wrong

  • B. Before the first flight of each day A once-a-day check doesn't meet the rule, which requires a check prior to each flight.
  • C. At the intervals the manufacturer sets Manufacturer maintenance schedules don't replace the check, which the rule requires prior to each flight.

FAA source

Question 17

Before flight, the remote PIC must assess the operating environment. According to 14 CFR part 107, which item must that assessment include?

  1. A. The total flight hours logged on the aircraft so far
  2. B. A flight plan filed with Flight Service before takeoff
  3. C. The airspace at the site and any flight restrictions
Show the answer and explanation

Answer: C. The airspace at the site and any flight restrictions

Before flight, § 107.49(a) requires the remote PIC to assess the operating environment, considering risks to persons and property on the surface and in the air. The assessment must include local weather conditions, local airspace and any flight restrictions, the location of persons and property on the surface, and other ground hazards.

Why the other choices are wrong

  • A. The total flight hours logged on the aircraft so far Flight hours are not among the items § 107.49(a) lists for the assessment of the operating environment.
  • B. A flight plan filed with Flight Service before takeoff A flight plan is not part of the assessment, which covers weather, airspace and flight restrictions, persons and property on the surface, and ground hazards.

FAA source

Question 18

Before a night flight, a remote PIC checks that flight visibility from the control station is at least 3 statute miles. Under 14 CFR part 107, what is flight visibility based on at night?

  1. A. The distance at which prominent lighted objects can be identified
  2. B. The distance at which prominent unlighted objects can be identified
  3. C. The distance at which the small UA's strobe light can be seen
Show the answer and explanation

Answer: A. The distance at which prominent lighted objects can be identified

Part 107 requires a minimum flight visibility of 3 statute miles, observed from the control station. Flight visibility is the average slant distance from the control station at which prominent unlighted objects can be seen and identified by day, and prominent lighted objects by night.

Why the other choices are wrong

  • B. The distance at which prominent unlighted objects can be identified Prominent unlighted objects are the daytime standard, not the night standard.
  • C. The distance at which the small UA's strobe light can be seen Flight visibility is judged from prominent lighted objects, not from the small UA's own light.

FAA source

Question 19

An applicant is found to have used an unauthorized phone app during a remote pilot knowledge test. For how long after the act is the applicant barred from applying for any FAA certificate or taking any FAA test?

  1. A. 14 days
  2. B. 1 year
  3. C. 2 years
Show the answer and explanation

Answer: B. 1 year

Using any material or aid during a knowledge test without the FAA's authorization is prohibited. An applicant the FAA finds committed such an act may not apply for any certificate, rating, or authorization, or apply for and take any test, for 1 year after the act. Any certificate the person holds may also be suspended or revoked.

Why the other choices are wrong

  • A. 14 days A 14-day (14 calendar days) wait applies after failing a knowledge test; it is not the penalty for cheating.
  • C. 2 years Too long. The bar lasts 1 year after the date of the act.

FAA source

Question 20

A remote PIC flies a mapping mission on autopilot, following a flight plan loaded from the control station. What must the remote PIC be able to do throughout the flight?

  1. A. Redirect it to a new route or altitude, or have it land at once
  2. B. Fly the aircraft by hand, since automated commands do not count
  3. C. Watch the camera's live video feed for the entire flight
Show the answer and explanation

Answer: A. Redirect it to a new route or altitude, or have it land at once

In an automated operation, the onboard autopilot makes the flight control inputs from the loaded flight plan. AC 107-2A says the remote PIC must still be able to change routing or altitude or command the aircraft to land immediately, by manual controls or by automation commands, consistent with § 107.19(e).

Why the other choices are wrong

  • B. Fly the aircraft by hand, since automated commands do not count The AC says the ability to direct the aircraft may come from manual flight controls or from commands sent through the automation.
  • C. Watch the camera's live video feed for the entire flight Part 107 doesn't require watching a camera feed, and first-person view devices don't satisfy the VLOS requirement.

FAA source

Question 21

A remote PIC in Alaska plans a Part 107 flight just after sunset. How is the period of civil twilight determined there?

  1. A. As the 30 minutes after official sunset, as in other states
  2. B. As the period of civil twilight defined in the Air Almanac
  3. C. As the 60 minutes after official sunset, due to the high latitude
Show the answer and explanation

Answer: B. As the period of civil twilight defined in the Air Almanac

Outside Alaska, § 107.29(c) defines civil twilight as the 30 minutes before official sunrise and the 30 minutes after official sunset. In Alaska, civil twilight is the period defined in the Air Almanac. During civil twilight, the small UA needs lighted anti-collision lighting visible for at least 3 statute miles.

Why the other choices are wrong

  • A. As the 30 minutes after official sunset, as in other states The 30-minute periods around sunrise and sunset apply everywhere except Alaska.
  • C. As the 60 minutes after official sunset, due to the high latitude Part 107 sets no 60-minute period; Alaska uses the Air Almanac definition.

FAA source

Question 22

AC 107-2A says a remote pilot gains night privileges through a knowledge test or recurrent training. Which topics must that test or training cover?

  1. A. Night physiology and night visual illusions
  2. B. Night instrument flying and radio procedures
  3. C. Anti-collision light testing and maintenance
Show the answer and explanation

Answer: A. Night physiology and night visual illusions

AC 107-2A says a certificated remote pilot receives night operations privileges only after completing a knowledge test with questions on night physiology and night visual illusions, or recurrent training that contains those topics. Part 107 ties night operations to an initial knowledge test or training completed after April 6, 2021.

Why the other choices are wrong

  • B. Night instrument flying and radio procedures AC 107-2A ties night privileges to night physiology and night visual illusions, not instrument flying.
  • C. Anti-collision light testing and maintenance Lighting is an equipment requirement for night flight. The topics AC 107-2A names for night privileges are night physiology and night visual illusions.

FAA source

Question 23

Before a paid flight carrying a customer's package, what must the remote PIC ensure about the package under Part 107?

  1. A. It is secure and doesn't degrade the aircraft's handling
  2. B. Its own weight, apart from the aircraft, is under 55 pounds
  3. C. It can be released remotely in an emergency
Show the answer and explanation

Answer: A. It is secure and doesn't degrade the aircraft's handling

Before flight, the remote PIC must ensure that any object attached to or carried by the small UA is secure and does not adversely affect the aircraft's flight characteristics or controllability. The total weight of the aircraft, including any property carried, must stay under 55 pounds.

Why the other choices are wrong

  • B. Its own weight, apart from the aircraft, is under 55 pounds The 55-pound limit applies to the whole aircraft, including everything on board or attached, not to the package alone.
  • C. It can be released remotely in an emergency Part 107 does not call for a release mechanism. It requires that carried objects be secure and not affect handling.

FAA source

Question 24

A small UA flown under Part 107 has an ATC transponder installed. Unless the FAA authorizes otherwise, how must the transponder be set during flight?

  1. A. On whenever the UA is in controlled airspace
  2. B. Off, except when manned traffic is nearby
  3. C. Off for the entire flight
Show the answer and explanation

Answer: C. Off for the entire flight

§ 107.52 says that, unless otherwise authorized by the Administrator, no person may operate a small UAS under Part 107 with a transponder on. The rule applies in every class of airspace and regardless of nearby traffic.

Why the other choices are wrong

  • A. On whenever the UA is in controlled airspace There is no controlled-airspace exception; the transponder must be off unless the Administrator authorizes otherwise.
  • B. Off, except when manned traffic is nearby Nearby traffic doesn't change the rule; the transponder may not be on without FAA authorization.

FAA source

Question 25

A remote PIC has epilepsy. According to AC 107-2A, who must determine that the condition is under control before the PIC flies?

  1. A. An FAA aviation medical examiner
  2. B. The remote PIC
  3. C. The client who hired the remote PIC
Show the answer and explanation

Answer: B. The remote PIC

AC 107-2A notes that certain medical conditions, such as epilepsy, may create a risk to operations. It is the remote PIC's responsibility to determine that the condition is under control and that the PIC can safely conduct the operation. Part 107 bars anyone who knows or has reason to know of a condition that would interfere with safe operation from acting as remote PIC.

Why the other choices are wrong

  • A. An FAA aviation medical examiner The AC places this responsibility on the remote PIC, not on a medical examiner.
  • C. The client who hired the remote PIC The responsibility belongs to the remote PIC, not to a client.

FAA source

Question 26

A remote PIC wants to let a coworker who has no remote pilot certificate fly the small UA during a job. According to 14 CFR part 107, what condition allows this?

  1. A. The coworker first obtains a student pilot certificate from the FAA.
  2. B. The remote PIC closely supervises and can take over the flight at once.
  3. C. The remote PIC gives the coworker signed permission to keep at the site.
Show the answer and explanation

Answer: B. The remote PIC closely supervises and can take over the flight at once.

A person without a remote pilot certificate may manipulate the flight controls only under the direct supervision of a remote PIC who can immediately take direct control of the flight. AC 107-2A adds that the remote PIC must be able to take over the flight controls immediately, which can be done in several ways.

Why the other choices are wrong

  • A. The coworker first obtains a student pilot certificate from the FAA. A student pilot certificate is not a condition in § 107.12; the rule requires direct supervision by a remote PIC who can take control at once.
  • C. The remote PIC gives the coworker signed permission to keep at the site. Written permission is not a condition in § 107.12; direct supervision and the ability to take immediate control are.

FAA source

Question 27

A battery fire breaks out on a small UA in flight, and landing at once means breaking a Part 107 rule. No one is hurt and no property other than the UA is damaged. What does Part 107 allow and require of the remote PIC?

  1. A. Deviate as needed for the emergency; send a written report if the FAA asks.
  2. B. Deviate as needed for the emergency; report to the FAA within 10 days.
  3. C. Deviate only after ATC approves; send a written report if the FAA asks.
Show the answer and explanation

Answer: A. Deviate as needed for the emergency; send a written report if the FAA asks.

In an in-flight emergency requiring immediate action, the remote PIC may deviate from any Part 107 rule to the extent necessary to meet the emergency. A remote PIC who deviates must send a written report of the deviation to the FAA if the FAA requests one. The 10-day safety event report in § 107.9 covers serious injury, loss of consciousness, or damage to property other than the UA, unless the repair cost is $500 or less or, in a total loss, the property's fair market value is $500 or less; none of that happened here.

Why the other choices are wrong

  • B. Deviate as needed for the emergency; report to the FAA within 10 days. The deviation report is due only if the FAA requests it. The 10-day deadline belongs to § 107.9 safety event reports (serious injury, loss of consciousness, or damage to other property, unless repair costs $500 or less or, in a total loss, the property is worth $500 or less), and none occurred here.
  • C. Deviate only after ATC approves; send a written report if the FAA asks. No ATC approval is needed before acting in an emergency; § 107.21 lets the remote PIC deviate to the extent necessary to meet it.

FAA source

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