AD NUMBER: 2007-22-04
MANUFACTURER: Airbus
SUBJECT: Airworthiness Directive 2007-22-04
SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above. This 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 cruise, an A330 operator experienced a LH (left-hand) wing tank pump 1 low pressure message followed immediately by LH wing tank stand-by pump low pressure message, then LH wing tank pumps low pressure message. The flight crew opened the cross-feed valve to feed the engine on LH wing from RH (right-hand) wing but RH wing tank pumps low-pressure message was displayed as well as advisory unbalanced fuel message. It has been confirmed following fuel tank entry that outlet of the LH pump #2 canister had broken due to static overload. If this situation is not corrected, it can lead to the loss of fuel on both engines in flight and a dual engine flameout. This AD requires actions that are intended to correct the unsafe condition described in the MCAI.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/