Summary
This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Airbus Model A300 B2 and B4 series airplanes, that currently requires repetitive visual inspections to detect cracks in the forward intermediate section skin at frame 30A where it joins stringer 30, and repair, if necessary. This action would add eddy current inspection(s) to detect cracks of the outer skin of the fuselage, which would terminate the repetitive detailed visual inspections. This action also would require repair of any cracked area and modification of the structure at certain frames. This proposal is prompted by in-service experience which has identified fatigue cracks in this area. The actions specified by the proposed AD are intended to prevent fatigue cracking, which could result in rapid decompression of the airplane.