AMC1 21.A.433(a)(5) Requirements for the approval of repairs to large aeroplanes subject to point 26.302 of Part-26

CAA ORS9 Decision No. 48

For repairs that affect fatigue-critical structures of turbine-powered large aeroplanes certified to carry 30 passengers or more, or with a payload capacity of 3 402 kg (7 500 lbs) or more, damage-tolerance evaluations demonstrate compliance with point 21.A.433(a)(5) when the certification basis used for the repair is:

1. Amdt 19 to CS 25.571, or subsequent amendments; or

2. the certification basis of the aeroplane, unless it precedes JAR 25.571 Change 7 or 14 CFR §25.571 Amendment 45, in which case the certification basis for the repair should be:

   1. JAR 25.571 Change 7 or 14 CFR §25.571 Amendment 45, or later amendments; or

   2. the specifications used for compliance with the applicable points of Part-26 for the fatigue-critical structures affected by the repair.