14 CFR § 135.377 - Large transport category airplanes: Reciprocating engine powered: Landing limitations: Alternate airports.

---
identifier: "/us/cfr/t14/s135.377"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 135.377 - Large transport category airplanes: Reciprocating engine powered: Landing limitations: Alternate airports."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "135.377"
section_name: "Large transport category airplanes: Reciprocating engine powered: Landing limitations: Alternate airports."
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: "135"
part_name: "OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT"
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), 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)."
regulatory_source: "Docket 16097, 43 FR 46783, Oct. 10, 1978, unless otherwise noted."
cfr_part: "135"
---


# 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.