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Atlas / eCFR / Subchapter G / Part 121

14 CFR · Part 121

OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS

390 sections 18 appendices 27 subparts Amended: 2026-04-24 View on eCFR ↗
326 Legal Interpretations 17 ELOS findings

Authority

49 U.S.C. 106(f), 40103, 40113, 40119, 41706, 42301 preceding note added by Pub. L. 112-95, sec. 412, 126 Stat. 89, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 44729, 44732; 46105; Pub. L. 111-216, 124 Stat. 2348 (49 U.S.C. 44701 note); Pub. L. 112-95, 126 Stat. 62 (49 U.S.C. 44732 note); Pub. L. 115-254, 132 Stat. 3186 (49 U.S.C. 44701 note).

Source

Docket 6258, 29 FR 19194, Dec. 31, 1964, unless otherwise noted.

Subpart A — General

7 sections

Subpart E — Approval of Routes: Domestic and Flag Operations

10 sections

Subpart F — Approval of Areas and Routes for Supplemental Operations

10 sections

Subpart G — Manual Requirements

6 sections

Subpart H — Aircraft Requirements

8 sections

Subpart I — Airplane Performance Operating Limitations

20 sections

Subpart J — Special Airworthiness Requirements

43 sections

Subpart K — Instrument and Equipment Requirements

46 sections

Subpart L — Maintenance, Preventive Maintenance, and Alterations

16 sections

Subpart M — Airman and Crewmember Requirements

11 sections

Subpart N — Training Program

28 sections

Subpart O — Crewmember Qualifications

15 sections

Subpart P — Aircraft Dispatcher Qualifications and Duty Time

4 sections

Subpart Q — Flight Time Limitations and Rest Requirements: Domestic Operations

3 sections

Subpart R — Flight Time Limitations: Flag Operations

9 sections

Subpart S — Flight Time Limitations: Supplemental Operations

14 sections

Subpart T — Flight Operations

45 sections

Subpart U — Dispatching and Flight Release Rules

43 sections

Subpart V — Records and Reports

17 sections

Subpart W — Crewmember Certificate: International

2 sections

Subpart X — Emergency Medical Equipment and Training

3 sections

Subpart Y — Advanced Qualification Program

13 sections

Subpart Z — Hazardous Materials Training Program

4 sections

Subpart AA — Continued Airworthiness and Safety Improvements

10 sections

Subpart BB — [Reserved]

1 section

Subpart CC — [Reserved]

1 section

Subpart DD — Special Federal Aviation Regulations

1 section

Appendices & SFARs

Related Advisory Circulars

ACs whose subject series maps to Part 121. 97 current, 140 cancelled.

+ 187 more on the FAA index

Recent Federal Register activity

The last 25 of 554 Federal Register documents that touch 14 CFR Part 121, newest first.

+ 529 more on federalregister.gov