---
kind: "section"
citation: "14 C.F.R. § 121.701"
title: "14"
number: "121.701"
heading: "Maintenance log: Aircraft."
url: "https://uscodex.org/cfr/14/121.701"
---

# §121.701. Maintenance log: Aircraft.

- (a) Each person who takes action in the case of a reported or observed failure or malfunction of an airframe, engine, propeller, or appliance that is critical to the safety of flight shall make, or have made, a record of that action in the airplane's maintenance log.
- (b) Each certificate holder shall have an approved procedure for keeping adequate copies of the record required in [paragraph (a)](#a) of this section in the airplane in a place readily accessible to each flight crewmember and shall put that procedure in the certificate holder's manual.

## Notes

### Source

Source: Docket 6258, 29 FR 19226, Dec. 31, 1964, unless otherwise noted.

### Authority

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).