CS 25.1355 Distribution system

Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023

IRImplementing rule

CS 25.1355Distribution system

(See AMC 25.1355)

(a)The distribution system includes the distribution busses, their associated feeders, and each control protective device.

(b)Reserved.

(c)If two independent sources of electrical power for particular equipment or systems are required for certification, or by operating rules, in the event of the failure of one power source for such equipment or system, another power source (including its separate feeder) must be automatically provided or be manually selectable to maintain equipment or system operation. (See AMC 25.1355(c) and AMC 25.1310(a).)

[Amdt 25/18]

IR · CS 25.1355 — CS-25 · ED Decision 2016/010/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

AMCAcceptable means of compliance

AMC 25.1355(c)Distribution system

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The arrangement, protection and control of the feeders from the busbars to the distribution points, and the divisions of loads among the feeders, should be such that no single fault occurring in any feeder or associated control circuit will hazard the aeroplane.

AMC · AMC 25.1355(c) — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

All rules in SUBPART F – EQUIPMENT

Consolidated from the EASA Easy Access Rules (revision 26 Jan 2023, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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