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CS 25J953 Fuel system independence

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

IRImplementing rule

CS 25J953 Fuel system independence

Each fuel system must allow the supply of fuel to the APU:

(a)Through a system independent of each part of the system supplying fuel to the main engines; or

(b)From the fuel supply to the main engine if provision is made for a shut-off means to isolate the APU fuel line.

[Amdt 25/1]

IR — CS-25 · ED Decision 2005/006/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

All rules in SUBPART J – AUXILIARY POWER UNIT INSTALLATIONS

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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