# Proposed AD FAA-2006-25513: Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-18-14
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 11, 2016, 81 FR 12841
- Comments due: May 10, 2016
- Became: [AD 2006-18-14](https://openairdocs.org/ad/2006-18-14)
- Docket: FAA-2006-25513 (https://www.regulations.gov/docket/FAA-2006-25513, where comments are filed)
- Project: 99-NE-61-AD
- FR document: 2016-05463
- Official PDF: https://openairdocs.org/files/sha256/3c/ce/3ccec04e540b2ba93fbc7b8bb3c057a0fada807073d3a0f5f98df32f7bcc156e (from https://www.govinfo.gov/content/pkg/FR-2016-03-11/pdf/2016-05463.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/03/11/2016-05463/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5055B8ADFD0E0BCF86257F730050D66B.0001
- Page: https://openairdocs.org/proposed/FAA-2006-25513

## Summary

We propose to supersede airworthiness directive (AD) 2006-18- 14 that applies to all Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 650-15 and Tay 651-54 turbofan engines. AD 2006-18-14 requires calculating and re-establishing the cyclic life of stage 1 high- pressure turbine (HPT) disks, part number (P/N) JR32013 and P/N JR33838, and stage 1 low-pressure turbine (LPT) disk, P/N JR32318A. This proposed AD would require re-calculating the cyclic life, and would impose a reduced cyclic life, of stage 1 HPT disk, P/N JR32013. We are proposing this AD to prevent failure of stage 1 HPT disks, P/N JR32013 and P/N JR33838, and stage 1 LPT disk, P/N JR32318A, which could result in an uncontained engine failure and damage to the airplane.

## Notices in this docket

- Mar 11, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-05463, comments due May 10, 2016 (https://www.federalregister.gov/documents/2016/03/11/2016-05463/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines)

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