AD 2017-17-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Cracking was observed on several intermediate pressure (IP) turbine stage 2 locking plates during module assembly, which could propagate during engine operation, leading to loss of a locking plate. Missing locking plates allow hot gas ingestion, locally overheating the blade retention features of the disk, potentially resulting in accelerated fatigue and release of one or more IP turbine stage 2 blades, possibly causing high energy uncontained debris release from the engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the intermediate-pressure (IP) turbine stage 2 locking plates for cracks. Replace any cracked locking plates as necessary.
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Compliance Time
Before further flight
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Affected Aircraft
Rolls-Royce plc Trent XWB-75, Trent XWB-79, Trent XWB-79B, and Trent XWB-84 turbofan engines with intermediate-pressure (IP) turbine stage 2 locking plates, Part Number KH12922 or KH16183.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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