AD 2013-02-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Low-pressure turbine (LPT) stage 2 disk interstage seal material loss and increased low-pressure rotor vibration while in flight, which could lead to LPT stage 2 disc cracks and uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct on-wing inspections of LPT disk seal fins and interstage seals when post-flight review indicates Engine Health Monitoring (EHM) low-pressure rotor (N1) vibration data exceeded maintenance-alert limits in flight. Perform in-shop inspections of LPT disk seal fins and interstage seals to detect cracks or damage, and take corrective action as necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the 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 engines, all serial numbers.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.