Equipment requirements: Aircraft carrying passengers under IFR.

CFR · 2024-01-01 · US · Title 14

No person may operate an aircraft under IFR, carrying passengers, unless it has— (a) A vertical speed indicator; (b) A free-air temperature indicator; (c) A heated pitot tube for each airspeed indicator; (d) A power failure warning device or vacuum indicator to show the power available for gyroscopic instruments from each power source; (e) An alternate source of static pressure for the altimeter and the airspeed and vertical speed indicators; (f) For a single-engine aircraft: (1) Two independent electrical power generating sources each of which is able to supply all probable combinations of continuous inflight electrical loads for required instruments and equipment; or (2) In addition to the primary electrical power generating source, a standby battery or an alternate source of electric power that is capable of supplying 150% of the electrical loads of all required instruments and equipment necessary for safe emergency operation of the aircraft for at least one hour; (g) For multi-engine aircraft, at least two generators or alternators each of which is on a separate engine, of which any combination of one-half of the total number are rated sufficiently to supply the electrical loads of all required instruments and equipment necessary for safe emergency operation of the aircraft except that for multi-engine helicopters, the two required generators may be mounted on the main rotor drive train; and (h) Two independent sources of energy (with means of selecting either) of which a

official document · source cfr-2024 · id 14:§ 135.163