EASA AD 2021-0035
Exhaust — Thrust Reverser Translating Cowl Pressure Seals — Inspection / Rework
Summary
EASA Airworthiness Directive 2021-0035 is an airworthiness directive issued by the European Union Aviation Safety Agency addressing Airbus A330-841 and A330-941 aeroplanes. It mandates inspection and rework of thrust reverser translating cowl pressure seals to ensure their integrity and proper bonding. The directive applies to specific affected thrust reverser parts identified by serial numbers.
What Changed
This new airworthiness directive introduces a one-time inspection requirement for affected thrust reverser translating cowl pressure seals and mandates corrective actions if damage or seal disbonding is found. It also sets conditions for the installation of affected parts, requiring prior inspection or seal replacement and bonding rework. The directive does not supersede any previous ADs.
Why It Matters
This directive is critical for maintaining the safe operation of Airbus A330 aircraft by preventing potential thrust loss due to missing or disbonded pressure seals on thrust reversers. For operators and maintenance organizations, compliance ensures continued airworthiness and avoids reduced aircraft performance during critical flight phases such as takeoff or go-around. It also helps avoid unplanned maintenance and operational disruptions.
What To Do
Operators must inspect each affected thrust reverser part within 36 months from 8 February 2021, following the instructions in the referenced Airbus and SAFRAN Nacelles service bulletins. If damage is found, seals must be replaced and bonding reworked before the next flight. If no damage is found, bonding rework must still be completed before the next flight. Installation of affected parts requires prior inspection or seal replacement and bonding rework as specified.
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