EASA SIB 2010-24
Airbus A340 Exhaust — Thrust Reverser (TR) Actuation System Doors — Recommended installation of warning placards
Summary
EASA Safety Information Bulletin 2010-24 is an informational bulletin addressing the Airbus A340 exhaust thrust reverser (TR) actuation system doors. It applies to Airbus A340 models -211, -212, -213, -311, -312, and -313 across all manufacturer serial numbers. The bulletin recommends installing warning placards on certain thrust reverser cowls to support previous modifications mandated by EASA Airworthiness Directive 2010-0044.
What Changed
This bulletin recommends the installation of warning placards on the eight unmodified thrust reverser cowls on each Airbus A340 aircraft after compliance with EASA AD 2010-0044. The AD required modification of 10 out of 16 thrust reverser pivoting doors with a new primary lock and actuator to reinforce the locking mechanism. The placards help manage interchangeability and prevent maintenance errors during C-Duct replacements.
Why It Matters
The recommendation helps aviation professionals avoid maintenance errors related to thrust reverser door modifications, which is critical for flight safety. Operators and maintenance teams benefit from clear visual warnings that distinguish modified and unmodified thrust reverser cowls. This supports compliance with EASA AD 2010-0044 and ensures proper handling of thrust reverser components.
What To Do
After completing the modifications required by EASA AD 2010-0044, operators should install warning placards on the eight unmodified thrust reverser cowls according to Airbus Service Bulletin A340-78-4044 instructions. Maintenance and compliance teams should update their procedures to include this step to prevent errors during future maintenance activities. No mandatory compliance deadline is specified in the bulletin.
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