Summary
We propose to adopt a new airworthiness directive (AD) for the products listed above that would supersede an existing AD. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
During High Time Equipment (HTE) reviews conducted within the scope of the A310 aircraft Design Service Goal (DSG) extension work, Airbus discovered that the splined couplings and the sliding bearings of the flap transmission system could be affected by corrosion and wear, especially when their protective components such as wiper rings and rubber gaiters could become defective. This condition, if not detected and corrected, could degrade the functional integrity of the flap transmission system. * * * * * The proposed AD would require actions that are intended to address the unsafe condition describedin the MCAI.