AD 2011-18-21
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rolls-Royce | plc (RR) RB211-524 Series Turbofan | Airworthiness Directives; Rolls-Royce plc (RR) RB211-524 Series Turbofan Engines |
Unsafe Condition
Deterioration of the engine combustion liner, which can result in combustion liner breakup, case burn-through, engine fire, and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Borescope-inspect the combustion liner head sections and meterpanel assembly of the combustion liner, and replace if necessary. Inspections must follow specific intervals and thresholds outlined in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within specified intervals based on engine series and repair status, as detailed in Tables 1 and 2 of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211-524 series turbofan engines, including models RB211-524B-02, -524B3-02, -524B2, -524B4, -524C2, -524D4, -524G, and -524H, with specific front combustion liner assemblies as defined by the AD.
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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