# Airworthiness Directives; Rolls-Royce plc RB211-22B Series Turbofan Engines
> **Rule** · Final rule. · Published 2003-06-27 · Effective 2003-08-01 · 68 FR 38171
## Document
- **Document number:** 03-16283
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc RB211-22B Series Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 38171
- **Publication date:** 2003-06-27
- **Effective date:** 2003-08-01
- **FAA docket:** Docket No. 2002-NE-10-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce plc (RR) RB211-22B series turbofan engines with intermediate pressure (IP) compressor stage 6 to 7 rotor shaft assembly part number (P/N) UL37094 installed. This amendment requires removal from service of IP compressor stage 6 to 7 rotor shaft assemblies P/N UL37094 before reaching newly reduced life limits. This amendment is prompted by the discovery of corrosion during inspection and analysis of IP compressor stage 6 to 7 rotor shaft assemblies returned from the field. The actions specified by this AD are intended to prevent corrosion-induced cracking of the IP compressor stage 6 to 7 rotor shaft assembly, resulting in an uncontained engine failure and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/06/27/03-16283/airworthiness-directives-rolls-royce-plc-rb211-22b-series-turbofan-engines)
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