---
title: "CS 25.904 Automatic Takeoff Thrust Control System (ATTCS) — CS-25 · Avioverse"
description: "Aeroplanes equipped with an engine power control system that automatically resets the power or thrust on the operating engine(s) when any engine fails…"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-e/cs-25-904"
---

# CS 25.904 Automatic Takeoff Thrust Control System (ATTCS)

Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023

IR Implementing rule

## CS 25.904 Automatic Takeoff Thrust Control System (ATTCS)

Aeroplanes equipped with 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.

IR · CS 25.904 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART E – POWERPLANT](https://avioverse.aero/regulations/easa/cs-25/subpart-e)

Consolidated from the EASA Easy Access Rules (revision 26 Jan 2023, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.