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CS 25.609 Protection of structure

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

IRImplementing rule

CS 25.609Protection of structure

(See AMC 25.609) Each part of the structure must-

(a)Be suitably protected against deterioration or loss of strength in service due to any cause, including –

(1)Weathering;

(2)Corrosion; and

(3)Abrasion; and

(b)Have provisions for ventilation and drainage where necessary for protection.

[Amdt 25/18]

IR · CS 25.609 — CS-25 · ED Decision 2016/010/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

AMCAcceptable means of compliance

AMC 25.609Protection of structure

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The comprehensive and detailed material standards accepted in the member states will be accepted as satisfying the requirement of CS 25.609.

AMC · AMC 25.609 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

All rules in SUBPART D – DESIGN AND CONSTRUCTION

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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