# Airworthiness Directives; Bell Helicopter Textron, Inc. Model 412, 412EP, and 412CF Helicopters
> **Rule** · Final rule; request for comments. · Published 2000-09-13 · Effective 2000-09-28 · 65 FR 55175
## Document
- **Document number:** 00-23208
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 65 FR 55175
- **Publication date:** 2000-09-13
- **Effective date:** 2000-09-28
- **FAA docket:** Docket No. 2000-SW-29-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) for Bell Helicopter Textron, Inc. (BHTI) Model 412, 412EP, and 412CF helicopters. This AD requires inspecting the upper left-hand cap angle (cap angle) and adjacent structure for a crack and, before further flight, replacing any cracked cap angle and repairing any crack in the adjacent structure. This AD is prompted by a report of a fatigue crack in a tailboom attachment cap angle. The actions specified in this AD are intended to prevent failure of a cap angle, loss of the tailboom, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/09/13/00-23208/airworthiness-directives-bell-helicopter-textron-inc-model-412-412ep-and-412cf-helicopters)
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