§23.1163 Powerplant accessories.

(a) Each engine mounted accessory must-- [(1) Be approved for mounting on the engine involved and use the provisions on the engines for mounting; or (2) Have torque limiting means on all accessory drives in order to prevent the torque limits established for those drives from being exceeded; and (3) In addition to paragraphs (a)(1) or (a)(2) of this section, be sealed to prevent contamination of the engine oil system and the accessory system.] (b) Electrical equipment subject to arcing or sparking must be installed to minimize the probability of contact with any flammable fluids or vapors that might be present in a free state. (c) Each generator rated at or more than 6 kilowatts must be designed and installed to minimize the probability of a fire hazard in the event it malfunctions. [(d) If the continued rotation of any accessory remotely driven by the engine is hazardous when malfunctioning occurs, a means to prevent rotation without interfering with the continued operation of the engine must be provided. (e) Each accessory driven by a gearbox that is not approved as part of the powerplant driving the gearbox must-- (1) Have torque limiting means to prevent the torque limits established for the affected drive from being exceeded; (2) Use the provisions on the gearbox for mounting; and (3) Be sealed to prevent contamination of the gearbox oil system and the accessory system.]