AD 2005-15-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc RB211-524 Series | Airworthiness Directives; Rolls-Royce plc RB211-524 Series Turbofan Engines |
Unsafe Condition
Discovery of cracks in the cooling air hole areas of the disk front spacer arm, which could lead to IP compressor stage 5 disk failure and uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Establish new reduced IP compressor stage 5 disk cyclic limits. Remove from service affected disks that already exceed the new reduced cyclic limit. Remove other affected disks before exceeding their cyclic limits using a drawdown schedule. Inspect disks at each shop visit or perform an on-wing eddy current inspection to extend disk life beyond specified limits.
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Compliance Time
Within 30 days after the effective date of the AD.
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Affected Aircraft
Rolls-Royce plc RB211-524 series turbofan engines with intermediate pressure (IP) compressor stage 5 disks part numbers listed in Table 2, installed on engine models listed in Table 1, including but not limited to Boeing 747, 767, and Lockheed L-1011 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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