• Appendix - Special Federal Aviation Regulation No. 50-2

• Appendix - Special Federal Aviation Regulation No. 71

• Appendix - Special Federal Aviation Regulation No. 97

• Subpart A [§ 121.1 - § 121.15] - Subpart A—General

• Subpart B - Subpart B—Certification Rules for Domestic and Flag Air Carriers [Reserved]

• Subpart C - Subpart C—Certification Rules for Supplemental Air Carriers and Commercial Operators [Reserved]

• Subpart D - Subpart D—Rules Governing All Certificate Holders Under This Part [Reserved]

• Subpart E [§ 121.91 - § 121.107] - Subpart E—Approval of Routes: Domestic and Flag Operations

• Subpart F [§ 121.111 - § 121.127] - Subpart F—Approval of Areas and Routes for Supplemental Operations

• Subpart G [§ 121.131 - § 121.141] - Subpart G—Manual Requirements

• Subpart H [§ 121.151 - § 121.163] - Subpart H—Aircraft Requirements

• Subpart I [§ 121.171 - § 121.207] - Subpart I—Airplane Performance Operating Limitations

• Subpart J [§ 121.211 - § 121.295] - Subpart J—Special Airworthiness Requirements

• Subpart K [§ 121.301 - § 121.360] - Subpart K—Instrument and Equipment Requirements

• Subpart L [§ 121.361 - § 121.380a] - Subpart L—Maintenance, Preventive Maintenance, and Alterations

• Subpart M [§ 121.381 - § 121.397] - Subpart M—Airman and Crewmember Requirements

• Subpart N [§ 121.400 - § 121.429] - Subpart N—Training Program

• Subpart O [§ 121.431 - § 121.459] - Subpart O—Crewmember Qualifications

• Subpart P [§ 121.461 - § 121.467] - Subpart P—Aircraft Dispatcher Qualifications and Duty Time

• Subpart Q [§ 121.470 - § 121.473] - Subpart Q—Flight Time Limitations and Rest Requirements: Domestic Operations

• Subpart R [§ 121.480 - § 121.495] - Subpart R—Flight Time Limitations: Flag Operations

• Subpart S [§ 121.500 - § 121.527] - Subpart S—Flight Time Limitations: Supplemental Operations

• Subpart T [§ 121.531 - § 121.590] - Subpart T—Flight Operations

• Subpart U [§ 121.591 - § 121.667] - Subpart U—Dispatching and Flight Release Rules

• Subpart V [§ 121.681 - § 121.713] - Subpart V—Records and Reports

• Subpart W [§ 121.721 - § 121.723] - Subpart W—Crewmember Certificate: International

• Subpart X [§ 121.801 - § 121.805] - Subpart X—Emergency Medical Equipment and Training

• Subpart Y [§ 121.901 - § 121.925] - Subpart Y—Advanced Qualification Program

• Subpart Z [§ 121.1001 - § 121.1007] - Subpart Z—Hazardous Materials Training Program

• Subpart AA [§ 121.1101 - § 121.1119] - Subpart AA—Continued Airworthiness and Safety Improvements

• Subpart BB -

• Subpart CC - Subpart CC [Reserved]

• §§ 121.1200-121.1399 - §[Reserved]

• Subpart DD [§ 121.1500 - § 121.1500] - Subpart DD—Special Federal Aviation Regulations

• Subpart 0 -

• Appendix Appendix A - Appendix A to Part 121—First Aid Kits and Emergency Medical Kits

• Appendix Appendix B - Appendix B to Part 121—Airplane Flight Recorder Specification

• Appendix Appendix C - Appendix C to Part 121—C-46 Nontransport Category Airplanes

• Appendix Appendix D - Appendix D to Part 121—Criteria for Demonstration of Emergency Evacuation Procedures Under § 121.291

• Appendix Appendix E - Appendix E to Part 121—Flight Training Requirements

• Appendix Appendix F - Appendix F to Part 121—Proficiency Check Requirements

• Appendix Appendix G - 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

• Appendix Appendix H - Appendix H to Part 121—Advanced Simulation

• Appendix - Appendixes I-J to Part 121 [Reserved]

• Appendix Appendix K - Appendix K to Part 121—Performance Requirements for Certain Turbopropeller Powered Airplanes

• Appendix Appendix L - Appendix L to Part 121—Type Certification Regulations Made Previously Effective

• Appendix Appendix M - Appendix M to Part 121—Airplane Flight Recorder Specifications

• Appendix Appendix N - Appendix N to Part 121 [Reserved]

• Appendix Appendix O - Appendix O to Part 121—Hazardous Materials Training Requirements For Certificate Holders

• Appendix Appendix P - Appendix P to Part 121—Requirements for ETOPS and Polar Operations