# Proposed AD FAA-2013-0687: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-04-08
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 13, 2013, 78 FR 49227
- Comments due: September 27, 2013
- Became: [AD 2014-04-08](https://openairdocs.org/ad/2014-04-08)
- Docket: FAA-2013-0687 (https://www.regulations.gov/docket/FAA-2013-0687, where comments are filed)
- Project: 2012-NM-118-AD
- FR document: 2013-19534
- Official PDF: https://openairdocs.org/files/sha256/38/98/3898facdb45610ab9c69e32de763069e945c86b269fb80e3ccaf9de6f9ad5c8d (from https://www.govinfo.gov/content/pkg/FR-2013-08-13/pdf/2013-19534.pdf)
- Federal Register: https://www.federalregister.gov/documents/2013/08/13/2013-19534/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6B94614F56C7697586257BC600534F7B.0001
- Page: https://openairdocs.org/proposed/FAA-2013-0687

## Summary

We propose to adopt a new airworthiness directive (AD) for all Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This proposed AD was prompted by reports of burr marks on the primary wheels, and cracked rings on the primary wheel shaft, on certain horizontal stabilizer trim actuators (HSTAs). This proposed AD would require replacing certain HSTAs. We are proposing this AD to prevent burr marks on the primary wheels, and cracked rings on the primary wheel shaft, on certain HSTAs, which may lead to a disconnect of the pitch trim surface and subsequent loss of pitch control, resulting in loss of control of the airplane.

## Notices in this docket

- Aug 13, 2013: Notice of proposed rulemaking (NPRM). (first notice), FR document 2013-19534, comments due Sep 27, 2013 (https://www.federalregister.gov/documents/2013/08/13/2013-19534/airworthiness-directives-bombardier-inc-airplanes)

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