AC 43-18, ADVISORY CIRCULAR: FABRICATION OF AIRCRAFT PARTS BY MAINTENANCE PERSONNEL (24 MAR 2006)

AC 43-18, ADVISORY CIRCULAR: FABRICATION OF AIRCRAFT PARTS BY MAINTENANCE PERSONNEL (24 MAR 2006)., The purpose of this advisory circular (AC) is to ensure that parts fabricated during maintenance and alteration have an equivalent level of safety to those parts produced under the original design holder’s production certificate. This AC provides one means of complying with the requirements of Title 14 of the Code of Federal Regulations (14 CFR) part 21 and part 43 for the design and fabrication of parts by persons performing maintenance and alterations using methods, techniques, and practices acceptable to the Administrator. As required by regulation, such parts fabrication and their implementation must be accomplished "in such a manner... that the condition of the aircraft, airframe, aircraft engine, propeller, or appliance worked on will be at least equal to its original or properly altered condition."