14 CFR 121.509

§ 121.509 Flight time limitations: Four pilot crews: airplanes.

United States · 14 CFR — Aeronautics and Space · Status: effective

Cite this

Citation: 14 CFR 121.509, § 121.509 Flight time limitations: Four pilot crews: airplanes, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/56861
Permanent ID: ys:prov:56861@1
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Full text

(a) No certificate holder conducting supplemental operations may schedule a pilot— (1) For flight deck duty in an airplane that has a crew of four pilots for more than eight hours in any 24 consecutive hours; or (2) To be aloft in an airplane that has a crew of four pilots for more than 16 hours in any 24 consecutive hours. (b) No pilot of an airplane that has a crew of four pilots may be on duty for more than 20 hours in any 24 consecutive hours.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.