AD 2018-18-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
A Trent 900 engine experienced increased low-pressure rotor vibration while in flight resulting in an in-flight shutdown (IFSD) and air turnback. Inspection of the engine revealed LPT damage. A subsequent review of the potential causes determined that engine overhaul shop visit activities could be a factor.
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Required Actions
Inspect the LPT disk seal fins and interstage seals after an overhaul shop visit when an engine test (pass-off test) is required due to the work performed. Remove engines that have incorporated the modifications introduced by RR Alert SB RB.211-72-AJ592, dated September 4, 2017, from its applicability.
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Compliance Time
Before further flight
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Affected Aircraft
Rolls-Royce plc RB211-Trent 970-84, RB211-Trent 970B-84, RB211-Trent 972-84, RB211-Trent 972B-84, RB211-Trent 977-84, RB211-Trent 977B-84, and RB211-Trent 980-84 turbofan engines.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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