14 CFR 121.511
§ 121.511 Flight time limitations: Flight engineers: airplanes.
United States · 14 CFR — Aeronautics and Space · Status: effective
Cite this
- Citation
- 14 CFR 121.511, § 121.511 Flight time limitations: Flight engineers: airplanes, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/56862
- Permanent ID
ys:prov:56862@1- SHA-256
28262b951beaf6056cdd4a93b050d037003efcae512140dbcfd58f07720cb16c
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
(a) In any operation in which one flight engineer is serving the flight time limitations in §§ 121.503 and 121.505 apply to that flight engineer.
(b) In any operation in which more than one flight engineer is serving and the flight crew contains more than two pilots the flight time limitations in § 121.509 apply in place of those in § 121.505.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.