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fatigue-critical baseline structure

EASA defines “fatigue-critical baseline 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 baseline structure” (“FCBS”) means the baseline structure of an aeroplane that is classified by the type-certificate or restricted type-certificate holder as a fatigue-critical structure;

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