# Proposed AD 2000-NM-272-AD: Bombardier Model DHC-7 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-12-11
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 22, 2001, 66 FR 6495
- Comments due: February 21, 2001
- Became: [AD 2001-12-11](https://openairdocs.org/ad/2001-12-11)
- Docket: 2000-NM-272-AD
- FR document: 01-1663
- Official PDF: https://openairdocs.org/files/sha256/8d/34/8d341d210f7389a16425f1ab2b42cb5bc303f0fa09a7d3eee754618484639c14 (from https://www.govinfo.gov/content/pkg/FR-2001-01-22/pdf/01-1663.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/01/22/01-1663/airworthiness-directives-bombardier-model-dhc-7-series-airplanes
- Page: https://openairdocs.org/proposed/2000-NM-272-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Bombardier Model DHC-7 series airplanes. This proposal would require modification of the pressure hoses to the ground spoiler actuators. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign airworthiness authority. This action is necessary to prevent blockage of pressure hoses to the ground spoiler actuators, leading to uncommanded deployment of the ground spoilers, resulting in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jan 22, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-1663, comments due Feb 21, 2001 (https://www.federalregister.gov/documents/2001/01/22/01-1663/airworthiness-directives-bombardier-model-dhc-7-series-airplanes)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.