# Airworthiness Directives; Eurocopter France Model EC120B Helicopters
> **Rule** · Final rule; request for comments. · Published 2001-03-05 · Effective 2001-03-20 · 66 FR 13232
## Document
- **Document number:** 01-5166
- **Category:** airworthiness
- **Manufacturer:** Eurocopter France Model EC120B
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 66 FR 13232
- **Publication date:** 2001-03-05
- **Effective date:** 2001-03-20
- **FAA docket:** Docket No. 2000-SW-31-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) for Eurocopter France Model EC120B helicopters. This action requires visually checking the engine to main gearbox coupling tube assembly (tube) for a crack and replacing any cracked tube. This amendment is prompted by a report of a crack detected on a tube. The actions specified by this AD are intended to prevent a tube failure, loss of engine drive, and a subsequent forced landing.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/03/05/01-5166/airworthiness-directives-eurocopter-france-model-ec120b-helicopters)
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