# Proposed AD FAA-2012-0008: Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-14-01
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 24, 2012, 77 FR 11019
- Comments due: April 24, 2012
- Became: [AD 2012-14-01](https://openairdocs.org/ad/2012-14-01)
- Docket: FAA-2012-0008 (https://www.regulations.gov/docket/FAA-2012-0008, where comments are filed)
- Project: 2011-NE-43-AD
- FR document: 2012-4287
- Official PDF: https://openairdocs.org/files/sha256/5e/1c/5e1cdc5f7eaca059a02bcd85d284fd040819b12528f8c1eab297b992bc121c19 (from https://www.govinfo.gov/content/pkg/FR-2012-02-24/pdf/2012-4287.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/02/24/2012-4287/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2CFA395D1E85FC0C862579AE0050E563.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0008

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 turbofan engines. This proposed AD was prompted by the discovery of a manufacturing defect on certain part number (P/N) and serial number (S/N) low-pressure (LP) compressor booster rotors. This proposed AD would require initial and repetitive fluorescent penetrant inspections of certain P/N and S/N LP compressor booster rotors and rework or replacement of them as terminating action to the repetitive inspections. We are proposing this AD to prevent failure of the LP compressor booster rotor, uncontained engine failure, and damage to the airplane.

## Notices in this docket

- Feb 24, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-4287, comments due Apr 24, 2012 (https://www.federalregister.gov/documents/2012/02/24/2012-4287/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines)

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