Flight and navigation instruments.
CFR · 2024-01-01 · US · Title 14
The following are required flight and navigational instruments: (a) An airspeed indicator. For Category A rotorcraft with V (b) A sensitive altimeter. (c) A magnetic direction indicator. (d) A clock displaying hours, minutes, and seconds with a sweep-second pointer or digital presentation. (e) A free-air temperature indicator. (f) A non-tumbling gyroscopic bank and pitch indicator. (g) A gyroscopic rate-of-turn indicator combined with an integral slip-skid indicator (turn-and-bank indicator) except that only a slip-skid indicator is required on rotorcraft with a third attitude instrument system that— (1) Is usable through flight attitudes of ±80 degrees of pitch and ±120 degrees of roll; (2) Is powered from a source independent of the electrical generating system; (3) Continues reliable operation for a minimum of 30 minutes after total failure of the electrical generating system; (4) Operates independently of any other attitude indicating system; (5) Is operative without selection after total failure of the electrical generating system; (6) Is located on the instrument panel in a position acceptable to the Administrator that will make it plainly visible to and useable by any pilot at his station; and (7) Is appropriately lighted during all phases of operation. (h) A gyroscopic direction indicator. (i) A rate-of-climb (vertical speed) indicator. (j) For Category A rotorcraft, a speed warning device when V
official document · source cfr-2024 · id 14:§ 29.1303