AD 2004-26-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc RB211 Series | Airworthiness Directives; Rolls-Royce plc RB211 Series Turbofan Engines |
Unsafe Condition
Cracks in the rim cooling air holes of certain high pressure (HP) turbine discs, manufactured between 1989 and 1999, which could propagate further than expected and lead to disc failure, resulting in an uncontained engine failure and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect certain HP turbine discs for cracks in the rim cooling air holes. Replace the discs with serviceable parts if necessary. Reduce inspection schedules for high-risk discs, which include all models except the RB211-22B-02 engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the reduced inspection schedules specified in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211 Series Turbofan Engines, including models RB211-535E4-37, RB211-535E4-B-37, RB211-535C-37, RB211-535E4-B-75, RB211-535E4-C, and RB211-22B-02, with HP turbine discs manufactured between 1989 and 1999.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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