# Airworthiness Directives; Agusta S.p.A. Model A109E Helicopters
> **Rule** · Final rule; request for comments. · Published 2001-08-29 · Effective 2001-09-13 · 66 FR 45565
## Document
- **Document number:** 01-21219
- **Category:** airworthiness
- **Manufacturer:** Agusta S.p.A. Model A109E
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 66 FR 45565
- **Publication date:** 2001-08-29
- **Effective date:** 2001-09-13
- **FAA docket:** Docket No. 2001-SW-24-AD
## Abstract

This amendment supersedes an existing airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109E helicopters that currently requires visually checking and inspecting each tail rotor blade (blade) for a crack at specified intervals. That AD also requires replacing any cracked blade with an airworthy blade. This amendment contains the same requirements but adds another blade to the applicability. This amendment is necessary because the added blade is manufactured using the same process as the blade that failed. The actions specified by this AD are intended to prevent failure of a blade and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/08/29/01-21219/airworthiness-directives-agusta-spa-model-a109e-helicopters)
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