14 CFR §27.771
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
For each pilot compartment—
- (a)The compartment and its equipment must allow each pilot to perform his duties without unreasonable concentration or fatigue;
- (b)If there is provision for a second pilot, the rotorcraft must be controllable with equal safety from either pilot seat; and
- (c)The vibration and noise characteristics of cockpit appurtenances may not interfere with safe operation.