---
kind: "section"
citation: "14 C.F.R. § 25.771"
title: "14"
number: "25.771"
heading: "Pilot compartment."
url: "https://uscodex.org/cfr/14/25.771"
---

# §25.771. Pilot compartment.

- (a) Each pilot compartment and its equipment must allow the minimum flight crew (established under [§ 25.1523](/cfr/14/25.1523.md)) to perform their duties without unreasonable concentration or fatigue.
- (b) The primary controls listed in [§ 25.779(a)](/cfr/14/25.779.md?p=a), excluding cables and control rods, must be located with respect to the propellers so that no member of the minimum flight crew (established under [§ 25.1523](/cfr/14/25.1523.md)), or part of the controls, lies in the region between the plane of rotation of any inboard propeller and the surface generated by a line passing through the center of the propeller hub making an angle of five degrees forward or aft of the plane of rotation of the propeller.
- (c) If provision is made for a second pilot, the airplane must be controllable with equal safety from either pilot seat.
- (d) The pilot compartment must be constructed so that, when flying in rain or snow, it will not leak in a manner that will distract the crew or harm the structure.
- (e) Vibration and noise characteristics of cockpit equipment may not interfere with safe operation of the airplane.

## Notes

### Amendments

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-4, 30 FR 6113, Apr. 30, 1965]

### 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. 25-4, 30 FR 6113, Apr. 30, 1965]