# Proposed AD FAA-2012-0422: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-15-16
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 1, 2012, 77 FR 25642
- Comments due: June 15, 2012
- Became: [AD 2012-15-16](https://openairdocs.org/ad/2012-15-16)
- Docket: FAA-2012-0422 (https://www.regulations.gov/docket/FAA-2012-0422, where comments are filed)
- Project: 2011-NM-177-AD
- FR document: 2012-10483
- Official PDF: https://openairdocs.org/files/sha256/01/eb/01eb43f9bc5357aeb0aadd3fc8ac8546a4b68d4638d093afb2bf346424aac8cb (from https://www.govinfo.gov/content/pkg/FR-2012-05-01/pdf/2012-10483.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/05/01/2012-10483/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D2AC24D3A19576A1862579F10048078A.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0422

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8 airplanes. This proposed AD was prompted by reports that various pushrods had been manufactured with tubes having the incorrect heat treatment. This proposed AD would require replacing the affected pushrod assembly. We are proposing this AD to prevent loss of rudder control, reduced directional control of the airplane on the ground, or a jammed nose landing gear (NLG) door that could prevent the NLG from retracting or extending.

## Notices in this docket

- May 1, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-10483, comments due Jun 15, 2012 (https://www.federalregister.gov/documents/2012/05/01/2012-10483/airworthiness-directives-bombardier-inc-airplanes)

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