# Proposed AD FAA-2011-0151: Bombardier, Inc. Model DHC-8-400 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-17-17
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 8, 2011, 76 FR 12629
- Comments due: April 22, 2011
- Became: [AD 2011-17-17](https://openairdocs.org/ad/2011-17-17)
- Docket: FAA-2011-0151 (https://www.regulations.gov/docket/FAA-2011-0151, where comments are filed)
- Project: 2009-NM-205-AD
- FR document: 2011-5161
- Official PDF: https://openairdocs.org/files/sha256/97/f3/97f30bc3798e9264fdffc7941a404a5acfdbe16e24702c911349624e4b668ce5 (from https://www.govinfo.gov/content/pkg/FR-2011-03-08/pdf/2011-5161.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/03/08/2011-5161/airworthiness-directives-bombardier-inc-model-dhc-8-400-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CF154469243B81778625784D005605A6.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0151

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above that would supersede an existing AD. 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:

Two cases of main landing gear collapse had been reported. Main landing gear collapse may result in unsafe landing of the aircraft.

* * * * *

The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Mar 8, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-5161, comments due Apr 22, 2011 (https://www.federalregister.gov/documents/2011/03/08/2011-5161/airworthiness-directives-bombardier-inc-model-dhc-8-400-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.