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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).)

(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).)

(c)      The powerplant installation must comply with CS 25.1309, 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) Safety Assessment of Powerplant Installations and AMC 25-24: Sustained Engine Imbalance)

[Amdt 25/1]

[Amdt 25/3]

[Amdt 25/8]

[Amdt 25/18]