# Proposed AD 2003-NE-05-AD: Turbomeca S.A. Arrius 2 B1, 2 B1A, 2 B1A 1, and 2 K1 Turboshaft Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-19-06
- Products: Turbomeca
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 20, 2003, 68 FR 27492
- Comments due: July 21, 2003
- Became: [AD 2003-19-06](https://openairdocs.org/ad/2003-19-06)
- Docket: 2003-NE-05-AD
- FR document: 03-12541
- Official PDF: https://openairdocs.org/files/sha256/d1/09/d10932884801dd731440e251f2605a6915608985ace9094f375e7f7a857c55b9 (from https://www.govinfo.gov/content/pkg/FR-2003-05-20/pdf/03-12541.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/05/20/03-12541/airworthiness-directives-turbomeca-sa-arrius-2-b1-2-b1a-2-b1a-1-and-2-k1-turboshaft-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6184445F06092F9086256D2C0048943A.0001
- Page: https://openairdocs.org/proposed/2003-NE-05-AD

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Turbomeca S.A. Arrius 2 B1, 2 B1A, 2 B1A 1, and 2 K1 turboshaft engines. This proposed AD would require replacement of the gas generator high pressure (HP) turbine disk before further flight after the engine has accumulated 5 minutes of operating time at the 2 1/2 minute one engine inoperative (OEI) power rating. This proposed AD is prompted by a failure of an HP turbine blade during accelerated aging simulation tests performed by the manufacturer on an Arrius 2 B1A engine. The actions specified in this proposed AD are intended to prevent engine failure of the only operating engine while experiencing an OEI condition.

## Notices in this docket

- May 20, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-12541, comments due Jul 21, 2003 (https://www.federalregister.gov/documents/2003/05/20/03-12541/airworthiness-directives-turbomeca-sa-arrius-2-b1-2-b1a-2-b1a-1-and-2-k1-turboshaft-engines)

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