Regulations last checked for updates: May 18, 2024

Title 14 - Aeronautics and Space last revised: Apr 18, 2026
§ 135.377 - Large transport category airplanes: Reciprocating engine powered: Landing limitations: Alternate airports.

No person may list an airport as an alternate airport in a flight plan unless the airplane (at the weight anticipated at the time of arrival at the airport), based on the assumptions in § 135.375(a) (1) and (2), can be brought to a full stop landing within 70 percent of the effective length of the runway.

authority: 49 U.S.C. 106(f), 106(g), 40113, 41706, 44701-44702, 44705, 44709, 44711-44713, 44715-44717, 44722, 44730, 45101-45105; Pub. L. 112-95, 126 Stat. 58 (49 U.S.C. 44730)
source: Docket No. 16097, 43 FR 46783, Oct. 10, 1978, unless otherwise noted.
cite as: 14 CFR 135.377