# Proposed AD 2001-NE-10-AD: Turbomeca S.A. Arriel Models 2 S1, 2 B, and 2 C Turboshaft Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2002-16-25
- Products: Turbomeca
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 11, 2002, 67 FR 6210
- Comments due: April 12, 2002
- Became: [AD 2002-16-25](https://openairdocs.org/ad/2002-16-25)
- Docket: 2001-NE-10-AD
- FR document: 02-3160
- Official PDF: https://openairdocs.org/files/sha256/34/3c/343cae2dc86bce51964a7c522ae041531a34af3cc96070ea8ae7602ded36fd67 (from https://www.govinfo.gov/content/pkg/FR-2002-02-11/pdf/02-3160.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/02/11/02-3160/airworthiness-directives-turbomeca-sa-arriel-models-2-s1-2-b-and-2-c-turboshaft-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A2022984465937286256B5E00684A83.0001
- Page: https://openairdocs.org/proposed/2001-NE-10-AD

## Summary

The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to Turbomeca S.A. Arriel models 2 S1, 2 B, and 2 C turboshaft engines. This proposal would require initial and repetitive visual inspections for fuel leaks, and replacement of fuel pumps that are found leaking fuel. In addition, this proposal would require removal from service fuel pumps that are found with pump wall thickness below minimum. This proposal is prompted by a manufacturing investigation of pump bodies found to have below minimum material thickness, which could cause fuel leakage through thin, porous walls, reducing fuel pump fire resistance. The actions specified by the proposed AD are intended to prevent fuel leakage, which may cause engine fires that could lead to an in-flight engine shutdown, damage to the helicopter, and forced landing.

## Notices in this docket

- Feb 11, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-3160, comments due Apr 12, 2002 (https://www.federalregister.gov/documents/2002/02/11/02-3160/airworthiness-directives-turbomeca-sa-arriel-models-2-s1-2-b-and-2-c-turboshaft-engines)

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