# Proposed AD FAA-2009-0057: Rolls-Royce plc (RR) RB211-535E4 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-20-14
- Products: Rolls-Royce
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 12, 2009, 74 FR 7002
- Comments due: April 13, 2009
- Became: [AD 2009-20-14](https://openairdocs.org/ad/2009-20-14)
- Docket: FAA-2009-0057 (https://www.regulations.gov/docket/FAA-2009-0057, where comments are filed)
- Project: 85-ANE-25-AD
- FR document: E9-3018
- Official PDF: https://openairdocs.org/files/sha256/d2/8c/d28ca8d2bbdb4399c7fb1123c17645377c3c01b10c69058756024139e4bd0375 (from https://www.govinfo.gov/content/pkg/FR-2009-02-12/pdf/E9-3018.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/02/12/E9-3018/airworthiness-directives-rolls-royce-plc-rr-rb211-535e4-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8A9B84A608EEBF938625755B004B72EC.0001
- Page: https://openairdocs.org/proposed/FAA-2009-0057

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) for Rolls-Royce (RR) RB211-535E4 series turbofan engines. That AD currently requires initial and repetitive inspections of the outer combustion case for cracks and possible removal. This proposed AD would require the same inspections, but would require using RR Mandatory Service Bulletin (MSB) RB.211-72-7775, Revision 3, dated April 9, 1999. This proposed AD results from RR issuing a revision to the MSB. We are proposing this AD to prevent an uncontained outer combustion case burst, which could result in damage to the airplane.

## Notices in this docket

- Feb 12, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-3018, comments due Apr 13, 2009 (https://www.federalregister.gov/documents/2009/02/12/E9-3018/airworthiness-directives-rolls-royce-plc-rr-rb211-535e4-series-turbofan-engines)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.