# Proposed AD FAA-2010-0562: Rolls-Royce plc Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-09-07
- Products: Rolls-Royce
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 14, 2013, 78 FR 28161
- Comments due: July 15, 2013
- Became: [AD 2011-09-07](https://openairdocs.org/ad/2011-09-07)
- Docket: FAA-2010-0562 (https://www.regulations.gov/docket/FAA-2010-0562, where comments are filed)
- Project: 2009-NE-29-AD
- FR document: 2013-11337
- Official PDF: https://openairdocs.org/files/sha256/b5/06/b5067245add6d2040e63adeeaa5686a52d2c930673fc68fa3302c983858f5f95 (from https://www.govinfo.gov/content/pkg/FR-2013-05-14/pdf/2013-11337.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/05/14/2013-11337/airworthiness-directives-rolls-royce-plc-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/25DBE59E5610257086257B6B004C47F6.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0562

## Summary

We propose to supersede an existing airworthiness directive (AD) that applies to all Rolls-Royce plc (RR) model RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61; and RB211 Trent 768-60, 772-60, and 772B-60; and RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17; and RB211-524G2- T-19, -524G3-T-19, -524H-T-36, and -524H2-T-19 turbofan engines that have a high-pressure (HP) compressor stage 1 to 4 rotor disc installed, with a certain part number (P/N) installed. The existing AD requires repetitive inspections of the axial dovetail slots, and follow-on corrective action depending on findings. This proposed AD expands the population of affected parts. This proposed AD also changes, for the purposes of this AD, the definition of ``engine shop visit.'' We are proposing this AD to detect cracks in the HP compressor stage 1 and 2 disc posts, which could result in failure of the disc post and HP compressor blades, damage to the engine, and damage to the airplane.

## Notices in this docket

- Jun 15, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-14318, comments due Jul 30, 2010 (https://www.federalregister.gov/documents/2010/06/15/2010-14318/airworthiness-directives-rolls-royce-plc-rr-rb211-524-series-and-rb211-trent-500-700-and-800-series)
- Oct 20, 2011: Notice of proposed rulemaking (NPRM)., FR document 2011-27069, comments due Dec 19, 2011 (https://www.federalregister.gov/documents/2011/10/20/2011-27069/airworthiness-directives-rolls-royce-plc-rr-turbofan-engines)
- May 14, 2013: Notice of proposed rulemaking (NPRM)., FR document 2013-11337, comments due Jul 15, 2013 (https://www.federalregister.gov/documents/2013/05/14/2013-11337/airworthiness-directives-rolls-royce-plc-turbofan-engines)

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