IRImplementing rule
21.A.610Approval for deviation
(a)Each manufacturer who requests approval to deviate from any performance standard of an ETSO shall demonstrate that the standards from which a deviation is requested are compensated for by factors or design features providing an equivalent level of safety.
(b)The request for approval to deviate, together with all pertinent data, shall be submitted to the Agency.
IR · 21.A.610 — Regulation (EU) No 748/2012 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025