(2002/06/01; no previous version) SUBCHAPTER E POWERPLANT - GENERAL 527.901 Installation (a) For the purpose of this chapter, the powerplant installation includes each part of the rotorcraft (other than the main and auxiliary rotor structures) that: (1) Is necessary for propulsion; (2) Affects the control of the major propulsive units; or (3) Affects the safety of the major propulsive units between normal inspections or overhauls.
(2002/06/01; no previous version) SUBCHAPTER F EQUIPMENT - GENERAL 527.1301 Function and Installation Each item of installed equipment must: (a) Be of a kind and design appropriate to its intended function; (b) Be labelled as to its identification, function, or operating limitations, or any applicable combination of these factors; (c) Be installed according to limitations specified for that equipment; and (d) Function properly when installed.