AD Amdt-39-11425
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | GmbH Models BR700- 710A1-10 and BR700-710A2-20 | Airworthiness Directives; BMW Rolls-Royce GmbH Models BR700- 710A1-10 and BR700-710A2-20 Turbofan Engines |
Unsafe Condition
Detachment of the engine compressor or combustion core fairings and damage to the engine bypass duct, which could lead to engine failure and damage to the airplane.
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Required Actions
Increase the repetitive inspection interval for engine compressor and combustion core fairings to 150 hours time-in-service (TIS) after an initial inspection and follow-on inspection at the current 50 hours TIS interval. Require an initial inspection and follow-on inspection at a 50 hours TIS interval following any engine core fairing or fastener removal, repair, or replacement. Add repair of engine core fairings as an alternate to replacement and include an inspection for loose engine core fairings to verify correct installation. Allow the option to incorporate redesigned core engine fairings as the terminating action to the required repetitive inspections.
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Compliance Time
Within the specified inspection intervals (initial inspection and follow-on inspections at 50 and 150 hours TIS).
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Affected Aircraft
BMW Rolls-Royce GmbH Models BR700-710A1-10 and BR700-710A2-20 turbofan engines.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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