# Proposed AD 2002-NM-297-AD: Bombardier Model DHC-8-301, -311, and -315 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-13-09
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 26, 2004, 69 FR 22461
- Comments due: May 26, 2004
- Became: [AD 2004-13-09](https://openairdocs.org/ad/2004-13-09)
- Docket: 2002-NM-297-AD
- FR document: 04-9382
- Official PDF: https://openairdocs.org/files/sha256/7c/7c/7c7c0501423e8fb10802b8eb1876ddbdbce9b085cff19c78f595304b37cfd48b (from https://www.govinfo.gov/content/pkg/FR-2004-04-26/pdf/04-9382.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/04/26/04-9382/airworthiness-directives-bombardier-model-dhc-8-301--311-and--315-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A571913E97113C5886256E82004F8268.0001
- Page: https://openairdocs.org/proposed/2002-NM-297-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Bombardier Model DHC-8-301, -311, and -315 airplanes. This proposal would require determining the modification number of the angle of attack (AOA) sensor vanes; testing the movement of the affected vanes to evaluate sticking against both the upper and the lower vane travel end stops; and corrective action, if necessary. This action is necessary to prevent an incorrect AOA indication to the stall warning system in flight, which could result in an inadvertent stall and consequent loss of control of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Apr 26, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-9382, comments due May 26, 2004 (https://www.federalregister.gov/documents/2004/04/26/04-9382/airworthiness-directives-bombardier-model-dhc-8-301--311-and--315-airplanes)

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