fatigue-critical structure

EASA defines “fatigue-critical structure” in one regulation. The wording below is reproduced verbatim from the EASA Easy Access Rules, with a link to the paragraph it comes from.

“fatigue-critical structure” (FCS) means a structure of an aeroplane that is susceptible to fatigue cracking that could lead to a catastrophic failure of the aeroplane.

Article 2 · Additional Airworthiness Specifications · Regulation (EU) 2015/640 · Easy Access Rules, 20 Mar 2026 revision · Read Article 2

Defined in the same article

airworthiness limitation section
baseline structure
corrosion prevention and control programme
damage tolerance evaluation
damage tolerance inspection
fatigue-critical baseline structure
fatigue-critical modified structure
large aeroplane

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