Regulations last checked for updates: Feb 12, 2026

Title 14 - Aeronautics and Space last revised: Dec 19, 2026
§ 25.904 - Automatic takeoff thrust control system (ATTCS).

Each applicant seeking approval for installation of an engine power control system that automatically resets the power or thrust on the operating engine(s) when any engine fails during the takeoff must comply with the requirements of appendix I of this part.

[Amdt. 25-62, 52 FR 43156, Nov. 9, 1987]
authority: 49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note)
source: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.
cite as: 14 CFR 25.904