A gradual release of Avioverse begins in October 2026. Request early access →
Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023
IRImplementing rule
A drain (or drains) must be provided to allow safe drainage of the oil system. Each drain must –
(a)Be accessible; and
(b)Have manual or automatic means for positive locking in the closed position.
IR · CS 25.1021 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023
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.
Metis opens with Avioverse in October 2026 · request early access.