IRImplementing rule
CS 25.405Secondary 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