CS 25.901 Installation

• ED Decision 2016/010/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

CS 25.901 Installation ED Decision 2016/010/R (a) For the purpose of this CS-25 the aeroplane powerplant installation includes each component 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. (b) For each powerplant – (1) The installation must comply with – (i) The installation instructions provided under CS-E 20(d) and (e); and (ii) The applicable provisions of this Subpart (see also AMC 20-1). (2) The components of the installation must be constructed, arranged, and installed so as to ensure their continued safe operation between normal inspections or overhauls. (See [AMC 25.901(b)(2)](#_DxCrossRefBm1709821382).) (3) The installation must be accessible for necessary inspections and maintenance; and (4) The major components of the installation must be electrically bonded to the other parts of the aeroplane. (See [AMC 25.901(b)(4)](#_DxCrossRefBm1709821381).) (c) The powerplant installation must comply with [CS 25.1309](#_DxCrossRefBm1709820691), except that the effects of the following need not comply with CS 25.1309(b): (1) Engine case burn through or rupture; (2) Uncontained engine rotor failure; and (3) Propeller debris release. (See [AMC 25.901(c)](#_DxCrossRefBm1709821380) Safety Assessment of Powerplant Installations and [AMC 25-24](#_DxCrossRefBm1709820972): Sustained Engine Imbalance) [Amdt 25/1] [Amdt 25/3] [Amdt 25/8] [Amdt 25/18]