AD Amdt-39-9978
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc RB | Airworthiness Directives; Rolls-Royce plc RB.211-524 Series Turbofan Engines |
Unsafe Condition
Premature engine combustor distress leading to engine fires due to thermal fatigue causing combustor liner and case burn-through.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform initial and repetitive borescope inspections of the head section and meterpanel assembly of the combustion liner. Replace with serviceable parts if necessary. Optional installation of a front combustion liner with a strengthened head section to terminate inspection requirements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Rolls-Royce plc RB.211-524 series turbofan engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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