Summary
This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Airbus Industrie Model A300-600 series airplanes, that currently requires repetitive high frequency eddy current inspections to detect cracks in bolt holes where parts of the main landing gear are attached to the rear spar, and repair, if necessary. This action would require repetitive ultrasonic inspections to detect cracking in certain bolt holes of the rear spar, and repair, if necessary. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to detect and correct cracking of the rear spar of the wing, which could result in reduced structural integrity of the airplane.