# Proposed AD 2002-SW-37-AD: Eurocopter France Model AS350B, B1, B2, BA, and D Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-08-06
- Products: Eurocopter France
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 4, 2002, 67 FR 67131
- Comments due: January 3, 2003
- Became: [AD 2003-08-06](https://openairdocs.org/ad/2003-08-06)
- Docket: 2002-SW-37-AD
- FR document: 02-27789
- Official PDF: https://openairdocs.org/files/sha256/e6/63/e6631c55d9d718e3feeac58da8afdf4a333d29759fa2d596468beba56fe40904 (from https://www.govinfo.gov/content/pkg/FR-2002-11-04/pdf/02-27789.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/11/04/02-27789/airworthiness-directives-eurocopter-france-model-as350b-b1-b2-ba-and-d-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2F63C953712818B986256C67004F507C.0001
- Page: https://openairdocs.org/proposed/2002-SW-37-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) for specified Eurocopter France (Eurocopter) model helicopters. This proposal would require fireproofing the engine oil tank breather pipe (breather pipe) where it passes through the firewall from the engine compartment to the main gearbox compartment. This proposal is prompted by the discovery of a design deficiency that permitted the installation of a non-fireproof breather pipe. The actions specified by the proposed AD are intended to prevent the spread of fire between two designated fire zones of the helicopter, additional structural damage, and a decrease in the time available to execute an emergency landing.

## Notices in this docket

- Nov 4, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-27789, comments due Jan 3, 2003 (https://www.federalregister.gov/documents/2002/11/04/02-27789/airworthiness-directives-eurocopter-france-model-as350b-b1-b2-ba-and-d-helicopters)

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