Airworthiness Directives; Airbus SAS Airplanes
Published . Updated .
The FAA is superseding Airworthiness Directive (AD) 2025-04- 05, which applied to all Airbus SAS Model A330-841 and -941 airplanes. AD 2025-04-05 required a revision of the existing airplane flight manual (AFM) and removal of the previously required limitations; a revision of the existing minimum equipment list (MEL); one-time or repetitive seal integrity tests of each engine bleed air system (EBAS) high pressure valve (HPV); additional maintenance instructions and corrective actions; and repetitive replacement of affected HPV clips; as applicable. AD 2025-04-05 also limited the installation of affected HPV clips. Since the FAA issued AD 2025-04-05, an improved EBAS HPV with unaffected HPV clips was certified, and it was determined that the bleed monitoring computer (BMC) software (SW) must be updated. This AD continues to require the actions in AD 2025-04-05, except for repetitive replacement of affected HPV clips. This AD also requires updating the BMC SW, additional work, and an additional revision of the existing MEL for the engine bleed overpressure valve; as applicable. This AD also prohibits the installation of certain BMC software. The FAA is issuing this AD to address the unsafe condition on these products.
Directly affected
- No company is named in this report.
Indirectly affected
- SPR Spirit AeroSystems
Spirit builds Boeing fuselages, so a Boeing aircraft story reaches this supplier
- GE GE Aerospace
GE Aerospace supplies and competes in commercial aircraft engines
- DAL Delta Air Lines
Delta flies the 737, so a Boeing aircraft story reaches its fleet
- LMT Lockheed Martin
Lockheed Martin is a defense and aerospace peer
- HWM Howmet Aerospace
Howmet supplies parts used on commercial and defense aircraft
- RTX RTX
RTX competes in aircraft engines and defense systems
- UAL United Airlines
United flies the 737, so a Boeing aircraft story reaches its fleet
- NOC Northrop Grumman
Northrop Grumman is a defense and aerospace peer
- TDG TransDigm
TransDigm supplies aircraft components to Boeing and the airlines
- AAL American Airlines
American flies the 737, so a Boeing aircraft story reaches its fleet
Price reaction, T-5 to T+3
The FAA is superseding Airworthiness Directive (AD) 2025-04- 05, which applied to all Airbus SAS Model A330-841 and -941 airplanes. AD 2025-04-05 required a revision of the existing airplane flight manual (AFM) and removal of the previousl…
Source: Federal Register
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