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Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023
IRImplementing rule
(See AMC 25.1449)
There must be a means to allow the crew to determine whether oxygen is being delivered to the dispensing equipment.
IR · CS 25.1449 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023
AMCAcceptable means of compliance
CS 25.1449 is also applicable to portable oxygen equipment.
A flow indicator should be provided, unless it can be shown that the inflation of the economiser system, or another appropriate means, provides an effective indication. A system using a simple rebreathing bag would not be considered an acceptable means of indication.
AMC · AMC 25.1449 — CS-25 · CS-25 Easy Access Rules · EAR revision 26 Jan 2023
Consolidated from the EASA Easy Access Rules (revision 26 Jan 2023, extracted 13 Oct 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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