---
kind: "section"
citation: "14 C.F.R. § 25.1141"
title: "14"
number: "25.1141"
heading: "Powerplant controls: general."
url: "https://uscodex.org/cfr/14/25.1141"
---

# §25.1141. Powerplant controls: general.


Each powerplant control must be located, arranged, and designed under [§§ 25.777 through 25.781](/cfr/14/25.777..25.781.md) and marked under [§ 25.1555](/cfr/14/25.1555.md). In addition, it must meet the following requirements:

- (a) Each control must be located so that it cannot be inadvertently operated by persons entering, leaving, or moving normally in, the cockpit.
- (b) Each flexible control must be approved or must be shown to be suitable for the particular application.
- (c) Each control must have sufficient strength and rigidity to withstand operating loads without failure and without excessive deflection.
- (d) Each control must be able to maintain any set position without constant attention by flight crewmembers and without creep due to control loads or vibration.
- (e) The portion of each powerplant control located in a designated fire zone that is required to be operated in the event of fire must be at least fire resistant.
- (f) For powerplant valve controls located in the flight deck there must be a means:
  - (1) For the flightcrew to select each intended position or function of the valve; and
  - (2) **To indicate to the flightcrew—**
    - (i) The selected position or function of the valve; and
    - (ii) **When the valve has not responded as intended to the selected position or function.**

## Notes

### Amendments

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-40, 42 FR 15044, Mar. 17, 1977; Amdt. 25-72, 55 FR 29785, July 20, 1990; Amdt. 25-115, 69 FR 40527, July 2, 2004]

### Authority

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

Source: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.

### Amendments

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-40, 42 FR 15044, Mar. 17, 1977; Amdt. 25-72, 55 FR 29785, July 20, 1990; Amdt. 25-115, 69 FR 40527, July 2, 2004]