Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A310 and A300-600 series airplanes, that requires a visual inspection to detect cracks in the aft mount beam assembly of the engine; and replacement of any cracked beam with a new beam or beam assembly. This amendment also requires a fluorescent penetrant inspection to detect cracks in the aft mount beam assembly of the engine, and various follow-on actions. This amendment is prompted by reports indicating that, apparently due to manufacturing defects during the forging process, cracking was found in two engine aft mount beams. The actions specified by this AD are intended to detect and correct such cracking, which could result in reduced structural integrity of the aft mount beam assembly of the engine.