# Proposed AD 98-SW-70-AD: Bell Helicopter Textron Canada (BHTC) Model 407 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-04-25
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 16, 1999, 64 FR 70201
- Comments due: February 14, 2000
- Became: [AD 2000-04-25](https://openairdocs.org/ad/2000-04-25)
- Docket: 98-SW-70-AD
- FR document: 99-32585
- Official PDF: https://openairdocs.org/files/sha256/92/c2/92c2200e5c3e6bf0cc9fccd7be65d120c564bb7f46d9e04dbe0dd25090574a59 (from https://www.govinfo.gov/content/pkg/FR-1999-12-16/pdf/99-32585.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/12/16/99-32585/airworthiness-directives-bell-helicopter-textron-canada-bhtc-model-407-helicopters
- Page: https://openairdocs.org/proposed/98-SW-70-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to BHTC Model 407 helicopters. This proposal would require modifying the door latch assemblies on all four crew and passenger doors. This proposal is prompted by an incident that occurred during a manufacturer's flight test, in which a door latch assembly broke, preventing occupants in the helicopter from opening the door. The actions specified by the proposed AD are intended to prevent a door latch rod assembly from disengaging from the door handle and preventing helicopter occupants from opening the door.

## Notices in this docket

- Dec 16, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-32585, comments due Feb 14, 2000 (https://www.federalregister.gov/documents/1999/12/16/99-32585/airworthiness-directives-bell-helicopter-textron-canada-bhtc-model-407-helicopters)

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