Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus SAS Model A330-200 and A330-300 series airplanes, and all Model A340-200 and A340-300 series airplanes. This proposed AD was prompted by reports of hydraulic system failure due to fatigue failure of the screws attaching the manual valve to the ground service manifold (GSM). This proposed AD would require, for certain GSMs, repetitive replacement of the hydraulic system GSM manual valve attachment screws having certain part numbers; and, for certain other GSMs with certain screws installed, replacement of those screws, as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.