---
title: "CS 25.405 Secondary control system — CS-25 · Avioverse"
description: "Secondary controls, such as wheel brake, spoiler, and tab controls, must be designed for the maximum forces that a pilot is likely to apply to those…"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-c/cs-25-405"
---

# CS 25.405 Secondary control system

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

IR Implementing rule

## CS 25.405 Secondary control system

Secondary controls, such as wheel brake, spoiler, and tab controls, must be designed for the maximum forces that a pilot is likely to apply to those controls. The following values may be used:

PILOT CONTROL FORCE LIMITS (SECONDARY CONTROLS).

| Control                                  | Limit pilot forces                                                                                                                           |
| ---------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| Miscellaneous: \*Crank, wheel, or lever. | but not less than 222 N (50 lbf) nor more than 667 N (150 lbf) (R = radius in mm). (Applicable to any angle within 20o of plane of control). |
| Twist                                    | 15 Nm (133 in.lbf)                                                                                                                           |
| Push-pull                                | To be chosen by applicant.                                                                                                                   |

\*Limited to flap, tab, stabiliser, spoiler, and landing gear operation controls.

\[Amdt. 25/3]

IR · CS 25.405 — CS-25 · ED Decision 2007/010/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART C – STRUCTURE](https://avioverse.aero/regulations/easa/cs-25/subpart-c)

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.