AD 2003-13-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc RB211-22B Series | Airworthiness Directives; Rolls-Royce plc RB211-22B Series Turbofan Engines |
Unsafe Condition
Corrosion-induced cracking of the intermediate pressure (IP) compressor stage 6 to 7 rotor shaft assembly, resulting in an uncontained engine failure and damage to the airplane.
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Required Actions
Remove IP compressor stage 6 to 7 rotor shaft assemblies P/N UL37094 from service before accumulating 13,500 cycles-since-new (CSN) for engines without RR SB 72-8700, or 12,980 CSN for engines with SB 72-8700. After the effective date, do not install any IP compressor stage 6 to 7 rotor shaft assembly P/N UL37094 that has reached the specified CSN limits.
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Compliance Time
Before accumulating the specified cycles-since-new (CSN) limits.
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Affected Aircraft
Rolls-Royce plc RB211-22B series turbofan engines with intermediate pressure (IP) compressor stage 6 to 7 rotor shaft assembly part number (P/N) UL37094 installed, including those installed on Lockheed Martin L1011 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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