# Proposed AD FAA-2012-1311: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-22-04
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 26, 2012, 77 FR 75906
- Comments due: February 11, 2013
- Became: [AD 2013-22-04](https://openairdocs.org/ad/2013-22-04)
- Docket: FAA-2012-1311 (https://www.regulations.gov/docket/FAA-2012-1311, where comments are filed)
- Project: 2011-NM-204-AD
- FR document: 2012-30925
- Official PDF: https://openairdocs.org/files/sha256/a2/e9/a2e9ebdb4444530345008efad672aa45704b1cb9cd44a471bc168b65dd2c63d2 (from https://www.govinfo.gov/content/pkg/FR-2012-12-26/pdf/2012-30925.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/12/26/2012-30925/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BA8A7707E3B7FB9786257AE0005517EC.0001
- Page: https://openairdocs.org/proposed/FAA-2012-1311

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-102, -103, and -106 airplanes, and Model DHC-8-200, -300, and -400 series airplanes. This proposed AD was prompted by reports of excessive wear found in the clevis (bolt) hole where the rod assembly attaches to the rudder/brake pedal bellcrank, due to prolonged fretting. This proposed AD would require measuring the bellcrank clevis holes, inspecting for cracking of the bellcrank, and re-working the clevis holes with steel bushings, or replacing the bellcrank. We are proposing this AD to detect and correct a worn or cracked clevis hole, which could cause failure of the bellcrank on one side, with subsequent asymmetric braking and consequent runway excursion.

## Notices in this docket

- Dec 26, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-30925, comments due Feb 11, 2013 (https://www.federalregister.gov/documents/2012/12/26/2012-30925/airworthiness-directives-bombardier-inc-airplanes)

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