# Proposed AD 2001-NE-02-AD: Rolls-Royce Deutschland (Formerly Rolls-Royce plc) Models Tay 650-15 and 651-54 Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-01-29
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 25, 2005, 70 FR 42515
- Comments due: September 23, 2005
- Became: [AD 2002-01-29](https://openairdocs.org/ad/2002-01-29)
- Docket: 2001-NE-02-AD
- FR document: 05-14574
- Official PDF: https://openairdocs.org/files/sha256/53/25/5325099937b81825a24aee966f7d4ec9b59fbcc431738da6f20988330636ed17 (from https://www.govinfo.gov/content/pkg/FR-2005-07-25/pdf/05-14574.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/07/25/05-14574/airworthiness-directives-rolls-royce-deutschland-formerly-rolls-royce-plc-models-tay-650-15-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1644FE392BE1D0AC862570490048E83A.0001
- Page: https://openairdocs.org/proposed/2001-NE-02-AD

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) for Rolls-Royce Deutschland (formerly Rolls-Royce plc) (RRD) models Tay 650-15 and 651-54 turbofan engines. That AD currently requires borescope inspection of the high pressure compressor (HPC) stage 12 disc assembly to detect damage caused by HPC outlet guide vane (OGV) retaining bolt failure, and replacement of unserviceable parts with serviceable parts. That AD also requires as terminating action, the incorporation of a new design retention arrangement for the HPC OGV to prevent HPC OGV retaining bolt failure. This proposed AD would require the same actions but extends the terminating action compliance time for Tay 650-15 engines. This proposed AD would also include references to later revisions of two of the applicable RRD service bulletins (SBs). This proposed AD results from findings that the terminating action compliance time for Tay 650-15 engines can be extended. We are proposing this AD to preventan uncontained failure of the HPC stage 11/12 disc spacer, which could result in damage to the airplane.

## Notices in this docket

- Jul 25, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-14574, comments due Sep 23, 2005 (https://www.federalregister.gov/documents/2005/07/25/05-14574/airworthiness-directives-rolls-royce-deutschland-formerly-rolls-royce-plc-models-tay-650-15-and)

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