14 CFR § 29.65 - Climb: All engines operating.
---
identifier: "/us/cfr/t14/s29.65"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 29.65 - Climb: All engines operating."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "29.65"
section_name: "Climb: All engines operating."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "C"
subchapter_name: "AIRCRAFT"
part_number: "29"
part_name: "AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT"
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), 106(g), 40113, 44701-44702, 44704."
regulatory_source: "Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted."
cfr_part: "29"
---
# 29.65 Climb: All engines operating.
(a) The steady rate of climb must be determined—
(1) With maximum continuous power;
(2) With the landing gear retracted; and
(3) At V<sub>y</sub> for standard sea level conditions and at speeds selected by the applicant for other conditions.
(b) For each Category B rotorcraft except helicopters, the rate of climb determined under paragraph (a) of this section must provide a steady climb gradient of at least 1:6 under standard sea level conditions.
(Secs. 313(a), 601, 603, 604, and 605 of the Federal Aviation Act of 1958 (49 U.S.C. 1354(a), 1421, 1423, 1424, and 1425); and sec. 6(c), Dept. of Transportation Act (49 U.S.C. 1655(c)))
[Doc. No. 5084, 29 FR 16150. Dec. 3, 1964, as amended by Amdt. 29-15, 43 FR 2326, Jan. 16, 1978; Amdt. 29-39, 61 FR 21900, May 10, 1996; 61 FR 33963, July 1, 1996]