# Proposed AD FAA-2010-0805: Bombardier, Inc. Model DHC-8-300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-26-13
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 25, 2010, 75 FR 52290
- Comments due: October 12, 2010
- Became: [AD 2010-26-13](https://openairdocs.org/ad/2010-26-13)
- Docket: FAA-2010-0805 (https://www.regulations.gov/docket/FAA-2010-0805, where comments are filed)
- Project: 2010-NM-042-AD
- FR document: 2010-21064
- Official PDF: https://openairdocs.org/files/sha256/d6/4b/d64b75c967ec0d31b86e904f5b6f4d478c17a202b0f61d907510d70113925fff (from https://www.govinfo.gov/content/pkg/FR-2010-08-25/pdf/2010-21064.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/08/25/2010-21064/airworthiness-directives-bombardier-inc-model-dhc-8-300-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/66F51939E7363D1B8625778A005CAF12.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0805

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Several cases of aileron terminal quadrant support brackets that were manufactured using sheet metal have been found cracked on DHC-8 Series 300 aircraft. Investigation revealed that the failure of the support bracket was due to fatigue. Failure of the aileron terminal quadrant support bracket could result in an adverse reduction of aircraft roll control. These conditions could result in loss of control of the airplane. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Aug 25, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-21064, comments due Oct 12, 2010 (https://www.federalregister.gov/documents/2010/08/25/2010-21064/airworthiness-directives-bombardier-inc-model-dhc-8-300-series-airplanes)

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