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  4. Part 121
  5. Subpart R
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14 CFR Part 121
  1. Subpart A: General
  2. Subpart B—Certification Rules for Domestic and Flag Air Carriers [Reserved]
  3. Subpart C—Certification Rules for Supplemental Air Carriers and Commercial Operators [Reserved]
  4. Subpart D—Rules Governing All Certificate Holders Under This Part [Reserved]
  5. Subpart E: Approval of Routes: Domestic and Flag Operations
  6. Subpart F: Approval of Areas and Routes for Supplemental Operations
  7. Subpart G: Manual Requirements
  8. Subpart H: Aircraft Requirements
  9. Subpart I: Airplane Performance Operating Limitations
  10. Subpart J: Special Airworthiness Requirements
  11. Subpart K: Instrument and Equipment Requirements
  12. Subpart L: Maintenance, Preventive Maintenance, and Alterations
  13. Subpart M: Airman and Crewmember Requirements
  14. Subpart N: Training Program
  15. Subpart O: Crewmember Qualifications
  16. Subpart P: Aircraft Dispatcher Qualifications and Duty Time
  17. Subpart Q: Flight Time Limitations and Rest Requirements: Domestic Operations
  18. Subpart R: Flight Time Limitations: Flag Operations
    1. § 121.480 Applicability.
    2. § 121.481 Flight time limitations: One or two pilot crews.
    3. § 121.483 Flight time limitations: Two pilots and one additional flight crewmember.
    4. § 121.485 Flight time limitations: Three or more pilots and an additional flight crewmember.
    5. § 121.487 Flight time limitations: Pilots not regularly assigned.
    6. § 121.489 Flight time limitations: Other commercial flying.
    7. § 121.491 Flight time limitations: Deadhead transportation.
    8. § 121.493 Flight time limitations: Flight engineers and flight navigators.
    9. § 121.495 Fatigue risk management system.
  19. Subpart S: Flight Time Limitations: Supplemental Operations
  20. Subpart T: Flight Operations
  21. Subpart U: Dispatching and Flight Release Rules
  22. Subpart V: Records and Reports
  23. Subpart W: Crewmember Certificate: International
  24. Subpart X: Emergency Medical Equipment and Training
  25. Subpart Y: Advanced Qualification Program
  26. Subpart Z: Hazardous Materials Training Program
  27. Subpart AA: Continued Airworthiness and Safety Improvements
  28. Subpart BB [Reserved]
  29. §§ 121.1200-121.1399 [Reserved]
  30. Subpart CC [Reserved]
  31. §§ 121.1400-121.1499 [Reserved]
  32. Subpart DD: Special Federal Aviation Regulations
  33. Appendices

    Appendix A to Part 121: First Aid Kits and Emergency Medical Kits
  34. Appendix B to Part 121: Airplane Flight Recorder Specification
  35. Appendix C to Part 121: C-46 Nontransport Category Airplanes
  36. Appendix D to Part 121: Criteria for Demonstration of Emergency Evacuation Procedures Under § 121.291
  37. Appendix E to Part 121: Flight Training Requirements
  38. Appendix F to Part 121: Proficiency Check Requirements
  39. Appendix G to Part 121: Doppler Radar and Inertial Navigation System (INS): Request for Evaluation; Equipment and Equipment Installation; Training Program; Equipment Accuracy and Reliability; Evaluation Program
  40. Appendix H to Part 121: Advanced Simulation
  41. Appendixes I-J to Part 121 [Reserved]
  42. Appendix K to Part 121: Performance Requirements for Certain Turbopropeller Powered Airplanes
  43. Appendix L to Part 121: Type Certification Regulations Made Previously Effective
  44. Appendix M to Part 121: Airplane Flight Recorder Specifications
  45. Appendix N to Part 121 [Reserved]
  46. Appendix O to Part 121: Hazardous Materials Training Requirements For Certificate Holders
  47. Appendix P to Part 121: Requirements for ETOPS and Polar Operations

14 CFR Part 121|eCFR Sep 29, 2026

Subpart R

Flight Time Limitations: Flag Operations

9 Sections|§§ 121.480–121.495

Read Citation (on FlightPush)

§ 121.480 Applicability.

This subpart prescribes flight time limitations and rest requirements for flag all-cargo operations, except that:

(a)

Certificate holders conducting operations with aircraft having a passenger seat configuration of 30 seats or fewer, excluding each crewmember seat, and a payload capacity of 7,500 pounds or less, may comply with the applicable requirements of §§ 135.261 through 135.273 of this chapter.

(b)

A certificate holder may apply the flightcrew member flight time and duty limitations and requirements of part 117 of this chapter. A certificate holder may choose to apply part 117 to its—

(1)

All-cargo operations conducted under contract to a U.S. government agency.

(2)

All-cargo operations not conducted under contract to a U.S. Government agency,

(3)

A certificate holder may elect to treat operations in paragraphs (b)(1) and (b) (2) of this section differently but, once having decided to conduct those operations under part 117, may not segregate those operations between this subpart and part 117.

§ 121.481 Flight time limitations: One or two pilot crews.

(a)

A certificate holder conducting flag operations may schedule a pilot to fly in an airplane that has a crew of one or two pilots for eight hours or less during any 24 consecutive hours without a rest period during these eight hours.

(b)

If a certificate holder conducting flag operations schedules a pilot to fly more than eight hours during any 24 consecutive hours, it shall give him an intervening rest period, at or before the end of eight scheduled hours of flight duty. This rest period must be at least twice the number of hours flown since the preceding rest period, but not less than eight hours. The certificate holder shall relieve that pilot of all duty with it during that rest period.

(c)

Each pilot who has flown more than eight hours during 24 consecutive hours must be given at least 18 hours of rest before being assigned to any duty with the certificate holder.

(d)

No pilot may fly more than 32 hours during any seven consecutive days, and each pilot must be relieved from all duty for at least 24 consecutive hours at least once during any seven consecutive days.

(e)

No pilot may fly as a member of a crew more than 100 hours during any one calendar month.

(f)

No pilot may fly as a member of a crew more than 1,000 hours during any 12-calendar-month period.

§ 121.483 Flight time limitations: Two pilots and one additional flight crewmember.

(a)

No certificate holder conducting flag operations may schedule a pilot to fly, in an airplane that has a crew of two pilots and at least one additional flight crewmember, for a total of more than 12 hours during any 24 consecutive hours.

(b)

If a pilot has flown 20 or more hours during any 48 consecutive hours or 24 or more hours during any 72 consecutive hours, he must be given at least 18 hours of rest before being assigned to any duty with the air carrier. In any case, he must be given at least 24 consecutive hours of rest during any seven consecutive days.

(c)

No pilot may fly as a flight crewmember more than—

(1)

120 hours during any 30 consecutive days;

(2)

300 hours during any 90 consecutive days; or

(3)

1,000 hours during any 12-calendar-month period.

§ 121.485 Flight time limitations: Three or more pilots and an additional flight crewmember.

(a)

Each certificate holder conducting flag operations shall schedule its flight hours to provide adequate rest periods on the ground for each pilot who is away from his base and who is a pilot on an airplane that has a crew of three or more pilots and an additional flight crewmember. It shall also provide adequate sleeping quarters on the airplane whenever a pilot is scheduled to fly more than 12 hours during any 24 consecutive hours.

(b)

The certificate holder conducting flag operations shall give each pilot, upon return to his base from any flight or series of flights, a rest period that is at least twice the total number of hours he flew since the last rest period at his base. During the rest period required by this paragraph, the air carrier may not require him to perform any duty for it. If the required rest period is more than seven days, that part of the rest period in excess of seven days may be given at any time before the pilot is again scheduled for flight duty on any route.

(c)

No pilot may fly as a flight crewmember more than—

(1)

350 hours during any 90 consecutive days; or

(2)

1,000 hours during any 12-calendar-month period.

§ 121.487 Flight time limitations: Pilots not regularly assigned.

(a)

Except as provided in paragraphs (b) through (e) of this section, a pilot who is not regularly assigned as a flight crewmember for an entire calendar month under § 121.483 or 121.485 may not fly more than 100 hours in any 30 consecutive days.

(b)

The monthly flight time limitations for a pilot who is scheduled for duty aloft for more than 20 hours in two-pilot crews in any calendar month, or whose assignment in such a crew is interrupted more than once in that calendar month by assignment to a crew consisting of two or more pilots and an additional flight crewmember, are those set forth in § 121.481.

(c)

Except for a pilot covered by paragraph (b) of this section, the monthly and quarterly flight time limitations for a pilot who is scheduled for duty aloft for more than 20 hours in two-pilot and additional flight crewmember crews in any calendar month, or whose assignment in such a crew is interrupted more than once in that calendar month by assignment to a crew consisting of three pilots and additional flight crewmember, are those set forth in § 121.483.

(d)

The quarterly flight time limitations for a pilot to whom paragraphs (b) and (c) of this section do not apply and who is scheduled for duty aloft for a total of not more than 20 hours within any calendar month in two-pilot crews (with or without additional flight crewmembers) are those set forth in § 121.485.

(e)

The monthly and quarterly flight time limitations for a pilot assigned to each of two-pilot, two-pilot and additional flight crewmember, and three-pilot and additional flight crewmember crews in a given calendar month, and who is not subject to paragraph (b), (c), or (d) of this section, are those set forth in § 121.483.

§ 121.489 Flight time limitations: Other commercial flying.

No pilot that is employed as a pilot by a certificate holder conducting flag operations may do any other commercial flying if that commercial flying plus his flying in air transportation will exceed any flight time limitation in this part.

§ 121.491 Flight time limitations: Deadhead transportation.

Time spent in deadhead transportation to or from duty assignment is not considered to be a part of a rest period.

§ 121.493 Flight time limitations: Flight engineers and flight navigators.

(a)

In any operation in which one flight engineer or flight navigator is required, the flight time limitations in § 121.483 apply to that flight engineer or flight navigator.

(b)

In any operation in which more than one flight engineer or flight navigator is required, the flight time limitations in § 121.485 apply to those flight engineers or flight navigators.

§ 121.495 Fatigue risk management system.

(a)

No certificate holder may exceed any provision of this subpart unless approved by the FAA under a Fatigue Risk Management System.

(b)

The Fatigue Risk Management System must include:

(1)

A fatigue risk management policy.

(2)

An education and awareness training program.

(3)

A fatigue reporting system.

(4)

A system for monitoring flightcrew fatigue.

(5)

An incident reporting process.

(6)

A performance evaluation.

Regulations Referenced Outside This Subpart

14 CFR 135.26114 CFR 135.27314 CFR Part 117
Previous SubpartSubpart Q: Flight Time Limitations and Rest Requirements: Domestic OperationsNext Subpart Subpart S: Flight Time Limitations: Supplemental Operations

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§ 121.480 Applicability.

Read Citation (on FlightPush)