AD 2013-05-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Failure of the oil pump drive shear neck due to a piston ring seal that was not seated properly in the IPC RSS groove.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the intermediate pressure compressor rear stub shaft (IPC RSS) piston ring to ensure proper seating in the groove.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 cycles of the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
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 that incorporate RR production Modification 72-G585 or modified in-service through RR Service Bulletin (SB) 72-G585, any revision, with a Module 33 installed having a serial number (S/N) prior to HC0320, except S/Ns HC0277, HC0281, HC0294, HC0301, HC0309, HC0313, HC0315, and HC0318.
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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