# Proposed AD 2000-SW-23-AD: Eurocopter Deutschland GmbH Model EC135 P1 and EC135 T1 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-26-12
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 18, 2000, 65 FR 56273
- Comments due: November 17, 2000
- Became: [AD 2000-26-12](https://openairdocs.org/ad/2000-26-12)
- Docket: 2000-SW-23-AD
- FR document: 00-23860
- Official PDF: https://openairdocs.org/files/sha256/1a/8e/1a8ea04beccb17a66ee177d86051d5a5a08bdb5155507487e425052185687c51 (from https://www.govinfo.gov/content/pkg/FR-2000-09-18/pdf/00-23860.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/09/18/00-23860/airworthiness-directives-eurocopter-deutschland-gmbh-model-ec135-p1-and-ec135-t1-helicopters
- Page: https://openairdocs.org/proposed/2000-SW-23-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (ECD) Model EC135 P1 and EC135 T1 helicopters. This proposal would require inspecting the hydraulic line shielding hose (hose), replacing any unairworthy hose with an airworthy hose, and installing a nylon cable tie. This proposal is prompted by the tail rotor drive shaft Thomas coupling contacting and chafing the hose that shields the fenestron tail rotor hydraulic lines. The actions specified by the proposed AD are intended to prevent damage to the hose, leaking of accumulated hydraulic fluid to an area with an ignition source, inflight fire, and subsequent loss of control of the helicopter.

## Notices in this docket

- Sep 18, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-23860, comments due Nov 17, 2000 (https://www.federalregister.gov/documents/2000/09/18/00-23860/airworthiness-directives-eurocopter-deutschland-gmbh-model-ec135-p1-and-ec135-t1-helicopters)

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