AD NUMBER: 2007-06-13
SUBJECT: Airworthiness Directive 2007-06-13 SUMMARY: The FAA is
adopting a new airworthiness directive (AD) for certain Airbus
airplane models, as specified above.
This AD requires installing electro-pneumatic locking bar
devices (TRAS lock systems) in the engine nacelles, installing a
dedicated and shielded electrical circuit that is segregated from
the existing thrust reverser control system, and performing related
investigative/corrective actions if necessary.
This AD results from the manufacturer's reassessment of the
thrust reverser systems in the Airbus airplane models specified
above, which showed that the thrust reverser could inadvertently
deploy in flight under certain conditions.
We are issuing this AD to prevent inadvertent deployment of
thrust reversers in flight, which could result in reduced
controllability of the airplane.