# Proposed AD FAA-2012-1331: Rolls-Royce plc Turbojet Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-11-13
- Products: Rolls-Royce
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 9, 2015, 80 FR 61131
- Comments due: December 8, 2015
- Became: [AD 2013-11-13](https://openairdocs.org/ad/2013-11-13)
- Docket: FAA-2012-1331 (https://www.regulations.gov/docket/FAA-2012-1331, where comments are filed)
- Project: 2012-NE-44-AD
- FR document: 2015-25607
- Official PDF: https://openairdocs.org/files/sha256/26/dd/26dd3c40fd4923b1b348822359b67588d9c61c2790dfb12d5a833e87a7776fb7 (from https://www.govinfo.gov/content/pkg/FR-2015-10-09/pdf/2015-25607.pdf)
- Federal Register: https://www.federalregister.gov/documents/2015/10/09/2015-25607/airworthiness-directives-rolls-royce-plc-turbojet-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/34A8C00454BAC09986257ED90047B7B7.0001
- Page: https://openairdocs.org/proposed/FAA-2012-1331

## Summary

We propose to supersede airworthiness directive (AD) 2013-11- 13 that applies to all Rolls-Royce plc (RR) Viper Mk. 601-22 turbojet engines. Since we issued AD 2013-11-13, RR determined that additional parts for the RR Viper Mk. 601-22 as well as additional engine models are affected. This proposed AD would add two new engine models and additional engine parts to the applicability. We are proposing this AD to prevent failure of life-limited parts, which could lead to an uncontained part release, damage to the engine, and damage to the airplane.

## Notices in this docket

- Feb 22, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-04103, comments due Apr 23, 2013 (https://www.federalregister.gov/documents/2013/02/22/2013-04103/airworthiness-directives-rolls-royce-1971-limited-bristol-engine-division-turbojet-engines)
- Oct 9, 2015: Notice of proposed rulemaking (NPRM)., FR document 2015-25607, comments due Dec 8, 2015 (https://www.federalregister.gov/documents/2015/10/09/2015-25607/airworthiness-directives-rolls-royce-plc-turbojet-engines)

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