14 CFR § 121.432 - General.

---
identifier: "/us/cfr/t14/s121.432"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 121.432 - General."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "121.432"
section_name: "General."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "G"
subchapter_name: "AIR CARRIERS AND OPERATORS FOR COMPENSATION OR HIRE: CERTIFICATION AND OPERATIONS"
part_number: "121"
part_name: "OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
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)."
cfr_part: "121"
---


# 121.432 General.

(a) Except in the case of operating experience under § 121.434 and ground training for mentoring required by §§ 121.419, 121.420, 121.427, and 121.429, as applicable, a pilot who serves as second in command of an operation that requires three or more pilots must be fully qualified to act as pilot in command of that operation.

(b) No certificate holder may conduct a check or any training in operations under this part, except for the following checks and training required by this part or the certificate holder:

(1) Line checks for pilots.

(2) Flight engineer checks (except for emergency procedures), if the person being checked is qualified and current in accordance with § 121.453(a).

(3) Flight attendant training and competence checks.

(c) Except for pilot line checks and flight engineer flight checks, the person being trained or checked may not be used as a required crewmember.

[Docket 9509, 35 FR 95, Jan. 3, 1970, as amended by Amdt. 121-130, 41 FR 47229, Oct. 28, 1976; Amdt. 121-366, 78 FR 67840, Nov. 12, 2013; Amdt. 121-382, 85 FR 10925, Feb. 25, 2020]