§29.1316 Electrical and electronic system lightning protection

(a) Each electrical and electronic system that performs a function whose failure would prevent the continued safe flight and landing of the rotorcraft, must be designed and installed in a way that: (1) the function is not adversely affected during and after the time the rotorcraft’s exposure to lightning; and (2) the system automatically recovers normal operation of that function, in a timely manner, after the rotorcraft’s exposure to lightning, unless the system’s recovery conflicts with other operational or functional requirements of the system that would prevent continued safe flight and landing of the rotorcraft. (b) For rotorcraft approved for instrument flight rules operation, each electrical and electronic system that performs a function whose failure would reduce the capability of the rotorcraft or the ability of the flight crew to respond to an adverse operating condition, must be designed and installed in a way that the function recovers normal operation in a timely manner after the rotorcraft’s exposure to lightning.