Airbus A340 Thrust Reverser Actuation System Doors SIB 2010-24
to install a warning placard on the 8 thrust reverser cowls
on each aeroplane in accordance with the instructions
defined in Airbus Service Bulletin A340-78-4044.
In order to reinforce the thrust reverser locking mechanism,
EASA AD 2010-0044 required installation of a new modified
primary lock and a new modified actuator on 10 critical thrust
reverser pivoting doors out of the 16 installed on each
aeroplane.
The possibility to install the same TR cowl on different
aeroplane serial numbers rendered necessary to manage the
interchangeability conditions, which were correctly defined in
the modification service bulletins mandated by EASA AD
2010-0044.
However, only 10 out of 16 thrust reverser pivoting doors are
required to be modified by the above AD. In order to avoid any
maintenance error during the C-Ducts replacement, EASA
recommends, after accomplishment of
EASA AD 2010-0044 requirements:
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