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: * * * * * The airworthiness limitations applicable to Damage Tolerant Airworthiness Limitation Items (DT ALI) are currently given in Airbus A330 ALI Document reference AI/SE-M4/95A.0089/97, which is approved by the European Aviation Safety Agency (EASA) and referenced in Airbus Airworthiness Limitations Section (ALS) Part 2.
The issue 17 of Airbus A330 ALI Document introduces more restrictive maintenance requirements/airworthiness limitations. Failure to comply with this issue constitutes an unsafe condition.
This [EASA] AD supersedes EASA AD 2009-0102 [and retains the requirements therein], and requires the implementation of the new or more restrictive maintenance requirements/airworthiness limitations as specified in Airbus A330 ALI Document issue 17.
The unsafe condition is fatigue cracking, damage, and corrosion in certain structure, which could result in reduced structural integrity of the airplane. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.