Wings — Inboard Flap Trunnion — Inspection / Modification
- Published
- Effective
- Deadline
- Replaces
- 2023-0132
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A350-941 aeroplanes must perform special detailed inspections of the inboard flap trunnion before the part reaches 9 years since first installation and repeat every 3 years thereafter. If cracks are found, corrective actions must be taken before the next flight. Installation of affected parts on Group 2 aircraft is prohibited from 17 July 2023. The modification replacing the inboard flap assemblies can be performed as a terminating action to stop further inspections.
Summary
EASA Airworthiness Directive 2023-0132R1 is an updated safety directive addressing inspection and modification requirements for the inboard flap trunnion on Airbus A350-941 aeroplanes, specifically serial numbers 0005 through 0046 excluding 0025 and 0033. The directive mandates inspections and potential modifications of affected trunnion arms made of forging aluminium 7037 to ensure structural integrity. It applies to specific part numbers installed on these aircraft.
What changed
This revision of EASA AD 2023-0132 introduces an optional terminating modification that replaces the repetitive special detailed inspections with a permanent fix by installing modified right-hand and left-hand inboard flap assemblies. Previously, only repetitive inspections and corrective actions were required. The modification is detailed in Airbus Modification Service Bulletins A350-57-P089 and A350-57-P090.
Why it matters
This directive is critical for maintaining the structural integrity of the inboard flap trunnion on affected Airbus A350-941 aircraft, preventing potential cracks that could compromise safety. Operators and maintenance organizations must comply to avoid unsafe conditions and ensure continued airworthiness. The modification option reduces long-term maintenance burden by eliminating repetitive inspections.
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