# Proposed AD 2002-NE-10-AD: Rolls-Royce plc Model RB211-22B Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-13-12
- Products: Rolls-Royce
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 2, 2002, 67 FR 71495
- Comments due: January 31, 2003
- Became: [AD 2003-13-12](https://openairdocs.org/ad/2003-13-12)
- Docket: 2002-NE-10-AD
- FR document: 02-30350
- Official PDF: https://openairdocs.org/files/sha256/7b/9d/7b9db983b53f81ce58da56c36d072ed49e4c19a3e8aeb27b66c8311fa1fbdebe (from https://www.govinfo.gov/content/pkg/FR-2002-12-02/pdf/02-30350.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/12/02/02-30350/airworthiness-directives-rolls-royce-plc-model-rb211-22b-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C20EC4285249944286256C8300747884.0001
- Page: https://openairdocs.org/proposed/2002-NE-10-AD

## Summary

The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Rolls-Royce plc (RR) model RB211-22B turbofan engines with intermediate pressure (IP) compressor stage 6 to 7 rotor shaft assembly part number (P/N) UL37094 installed. This proposal would require removal from service of IP compressor stage 6 to 7 rotor shaft assemblies P/N UL37094 before reaching newly reduced life limits. This proposal 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 the proposed 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.

## Notices in this docket

- Dec 2, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-30350, comments due Jan 31, 2003 (https://www.federalregister.gov/documents/2002/12/02/02-30350/airworthiness-directives-rolls-royce-plc-model-rb211-22b-turbofan-engines)

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