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AMC E 520(a) Strength - High Cycle Fatigue

Engines (CS-E) · CS-E · EAR revision 7 Dec 2023

AMCAcceptable means of compliance

AMC E 520(a) Strength - High Cycle Fatigue

In order to minimise the adverse consequences of Failures due to unpredicted high cycle fatigue it is recommended that, normally, the relative fatigue strengths of the blade/disc are graded such that they lie in the ascending order: blade form, blade root, disc blade attachment, disc rim.

[Amdt. No.: E/1]

AMC — CS-E · ED Decision 2007/015/R · CS-E Easy Access Rules · EAR revision 7 Dec 2023

All rules in SUBPART D – TURBINE ENGINES: DESIGN AND CONSTRUCTION

Consolidated from the EASA Easy Access Rules (revision 7 Dec 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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