# Proposed AD 2002-SW-53-AD: Eurocopter France Model EC 155B, SA-365N and N1, AS-365N2, and AS 365 N3 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-18-03
- Products: Eurocopter France
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 7, 2003, 68 FR 16735
- Comments due: June 6, 2003
- Became: [AD 2003-18-03](https://openairdocs.org/ad/2003-18-03)
- Docket: 2002-SW-53-AD
- FR document: 03-8329
- Official PDF: https://openairdocs.org/files/sha256/28/2e/282e8bfc8f17d1c9f7f3e0146d3220319eafb3da7d0eb516361280b6427e509b (from https://www.govinfo.gov/content/pkg/FR-2003-04-07/pdf/03-8329.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/04/07/03-8329/airworthiness-directives-eurocopter-france-model-ec-155b-sa-365n-and-n1-as-365n2-and-as-365-n3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0EEDCFBDAE367B8C86256D010051E91B.0001
- Page: https://openairdocs.org/proposed/2002-SW-53-AD

## Summary

This document proposes adopting a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 155B, SA-365N and N1, AS-365N2, and AS 365 N3 helicopters with emergency flotation gear installed. This proposal would require inspecting the hydraulic brake hose (hose) for crazing, pinching, distortion, or leaks at the torque link hinge and replacing the hose, if necessary. This proposal would also require inspecting the hose and the emergency flotation gear pipe to ensure adequate clearance, and adjusting the landing gear leg, if necessary. This proposal is prompted by a report of a hose compression due to interference with a clamp that attaches the emergency flotation gear pipe. The actions specified by this proposed AD are intended to prevent failure of the hose, resulting in failure of hydraulic pressure to the brakes on the affected landing gear wheel and subsequent loss of control of the helicopter during a run-on landing.

## Notices in this docket

- Apr 7, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-8329, comments due Jun 6, 2003 (https://www.federalregister.gov/documents/2003/04/07/03-8329/airworthiness-directives-eurocopter-france-model-ec-155b-sa-365n-and-n1-as-365n2-and-as-365-n3)

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