Summary
The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all Airbus Model A300 airplanes. The existing AD currently requires repetitive inspections for cracking and corrosion in the lower rim area of the rear pressure bulkhead and adjacent areas, repetitive inspections for cracking or corrosion in the service apertures and the upper rim area of the rear pressure bulkhead, and corrective actions if necessary. This proposed AD would remove certain repetitive inspections and reduce the repetitive interval of one inspection. This proposed AD would also require an inspection for missing or damaged sealant of the area between the outer attachment angle and circumferential joint doubler, and corrective action if necessary. This proposed AD would also require additional inspections for corrosion of certain areas and repetitive inspections for airplanes on which repairs have been done. This proposed AD results from reports of corrosion and cracking in thevarious components associated with the rear pressure bulkhead. We are proposing this AD to prevent reduced structural capability of the fuselage and consequent decompression of the airplane.