Airworthiness Directives; Airbus Model A300 B2 and B4 Series Airplanes

This amendment adopts a new airworthiness directive (AD) that is applicable to all Airbus Model A300 B2 and B4 series airplanes. This action requires a one-time inspection to detect and correct corrosion of the lower bulkhead attachment, and corrective action, if necessary. This action is necessary to detect and correct corrosion of the lower bulkhead attachment, which could result in reduced structural integrity of the rear pressure bulkhead and consequent damage to components of the flight control, hydraulic, and auxiliary power unit fuel systems. This action is intended to address the identified unsafe condition.