# Proposed AD FAA-2012-1006: Rolls-Royce Deutschland Ltd & Co KG Turbojet Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-05-20
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of Proposed Rulemaking (NPRM).
- Published: November 7, 2012, 77 FR 66769
- Comments due: January 7, 2013
- Became: [AD 2013-05-20](https://openairdocs.org/ad/2013-05-20)
- Docket: FAA-2012-1006 (https://www.regulations.gov/docket/FAA-2012-1006, where comments are filed)
- Project: 2012-NE-28-AD
- FR document: 2012-27170
- Official PDF: https://openairdocs.org/files/sha256/18/da/18da57373abb1b66594abaa0d17e05b9ab667e6f6fb30f66ff451b0e9b5c0e62 (from https://www.govinfo.gov/content/pkg/FR-2012-11-07/pdf/2012-27170.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/11/07/2012-27170/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbojet-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FDDDDC836B01D67F86257AAF004FC832.0001
- Page: https://openairdocs.org/proposed/FAA-2012-1006

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Spey 511-8 turbojet engines. This proposed AD was prompted by a recent quality review determination that bolts with reduced material properties may have been installed in some engines. This proposed AD would require inspection and replacement if necessary, of affected bolts, and if any bolt is found broken, inspection of the adjacent disc(s) for damage. We are proposing this AD to prevent uncontained turbine disc fracture and damage to the airplane.

## Notices in this docket

- Nov 7, 2012: Notice of Proposed Rulemaking (NPRM). (first notice), FR document 2012-27170, comments due Jan 7, 2013 (https://www.federalregister.gov/documents/2012/11/07/2012-27170/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbojet-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.