# Proposed AD 2000-NM-203-AD: Aerospatiale Model ATR42-200, -300, -320, and -500 Series Airplanes; and Model ATR72 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-15-09
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 26, 2001, 66 FR 20957
- Comments due: May 29, 2001
- Became: [AD 2001-15-09](https://openairdocs.org/ad/2001-15-09)
- Docket: 2000-NM-203-AD
- FR document: 01-10341
- Official PDF: https://openairdocs.org/files/sha256/11/8c/118c0c0a0bd59b38e148718f4ce9c00025494f484db7221ca22247e83590dff4 (from https://www.govinfo.gov/content/pkg/FR-2001-04-26/pdf/01-10341.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/04/26/01-10341/airworthiness-directives-aerospatiale-model-atr42-200--300--320-and--500-series-airplanes-and-model
- Page: https://openairdocs.org/proposed/2000-NM-203-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Aerospatiale Model ATR42- 200, -300, -320, and -500 series airplanes; and Model ATR72 series airplanes. This proposal would require replacement of the existing uplock boxes of the main and nose landing gears with modified uplock boxes. This action is necessary to prevent a mechanical failure of the uplock box mechanisms, which could result in failure of the associated landing gear to extend. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Apr 26, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-10341, comments due May 29, 2001 (https://www.federalregister.gov/documents/2001/04/26/01-10341/airworthiness-directives-aerospatiale-model-atr42-200--300--320-and--500-series-airplanes-and-model)

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