Part 121 — Operating Requirements: Domestic, Flag, and Supplemental Operations
- Subpt. A General §§121.1 to 121.15
- Subpt. B Certification Rules for Domestic and Flag Air Carriers [Reserved]
- Subpt. C Certification Rules for Supplemental Air Carriers and Commercial Operators [Reserved]
- Subpt. D Rules Governing All Certificate Holders Under This Part [Reserved]
- Subpt. E Approval of Routes: Domestic and Flag Operations §§121.91 to 121.107
- Subpt. F Approval of Areas and Routes for Supplemental Operations §§121.111 to 121.127
- Subpt. G Manual Requirements §§121.131 to 121.141
- Subpt. H Aircraft Requirements §§121.151 to 121.163
- Subpt. I Airplane Performance Operating Limitations §§121.171 to 121.207
- Subpt. J Special Airworthiness Requirements §§121.211 to 121.295
- Subpt. K Instrument and Equipment Requirements §§121.301 to 121.360
- Subpt. L Maintenance, Preventive Maintenance, and Alterations §§121.361 to 121.380a
- Subpt. M Airman and Crewmember Requirements §§121.381 to 121.397
- Subpt. N Training Program §§121.400 to 121.429
- Subpt. O Crewmember Qualifications §§121.431 to 121.455-121.459
- Subpt. P Aircraft Dispatcher Qualifications and Duty Time §§121.461 to 121.467
- Subpt. Q Flight Time Limitations and Rest Requirements: Domestic Operations §§121.470 to 121.473
- Subpt. R Flight Time Limitations: Flag Operations §§121.480 to 121.495
- Subpt. S Flight Time Limitations: Supplemental Operations §§121.500 to 121.527
- Subpt. T Flight Operations §§121.531 to 121.590
- Subpt. U Dispatching and Flight Release Rules §§121.591 to 121.667
- Subpt. V Records and Reports §§121.681 to 121.713
- Subpt. W Crewmember Certificate: International §§121.721 to 121.723
- Subpt. X Emergency Medical Equipment and Training §§121.801 to 121.805
- Subpt. Y Advanced Qualification Program §§121.901 to 121.925
- Subpt. Z Hazardous Materials Training Program §§121.1001 to 121.1007
- Subpt. AA Continued Airworthiness and Safety Improvements §§121.1101 to 121.1119
- Subpt. BB Subpart BB [Reserved]
- Subpt. CC Subpart CC [Reserved]
- Subpt. DD Special Federal Aviation Regulations §121.1500