AD 2012-25-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Intermediate-pressure (IP) turbine discs produced before 1997 may contain steel inclusions, which could lead to uncontained IP turbine disc failure, engine failure, and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove and inspect affected IP turbine discs for steel inclusions. Remove discs from service if they fail inspection. Remove some discs from service at reduced life limits.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211-524G2-19, RB211-524G2-T-19, RB211-524G3-19, RB211-524G3-T-19, RB211-524H2-19, RB211-524H2-T-19, RB211-524H-36, RB211-524H-T-36, RB211-535E4-37, RB211-535E4-B-37, RB211-535E4-B-75, and RB211-535E4-C-37 turbofan engines with IP discs listed in Appendix 1 and Appendix 2 of RR Alert Service Bulletin RB.211-72-AG493, Revision 2.
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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