# Airworthiness Directives; Eurocopter France Model SA-365 N1, AS-365 N2, N3, SA 366 G1, and EC-155B and B1 Helicopters
> **Rule** · Final rule; request for comments. · Published 2006-05-03 · Effective 2006-05-18 · 71 FR 25930
## Document
- **Document number:** 06-4108
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 71 FR 25930
- **Publication date:** 2006-05-03
- **Effective date:** 2006-05-18
- **FAA docket:** Docket No. FAA-2006-24588
## Abstract

This amendment adopts a new airworthiness directive (AD) for the specified Eurocopter France (Eurocopter) Model SA-365 N1, AS-365 N2, N3, SA 366 G1, and EC-155B and B1 helicopters. This action requires a one-time inspection for end play in the pitch control rod assembly double bearing (bearing) using the tail rotor (T/R) hub control plate, and before further flight, replacing the bearing if end play is present. This amendment is prompted by one incident in which a pilot lost T/R pitch control of a helicopter while landing. The actions specified in this AD are intended to detect damage to the bearing, resulting in end play and prevent loss of T/R pitch control and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/05/03/06-4108/airworthiness-directives-eurocopter-france-model-sa-365-n1-as-365-n2-n3-sa-366-g1-and-ec-155b-and-b1)
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