# Proposed AD FAA-2014-0567: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-25-02
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 14, 2014, 79 FR 47594
- Comments due: September 29, 2014
- Became: [AD 2014-25-02](https://openairdocs.org/ad/2014-25-02)
- Docket: FAA-2014-0567 (https://www.regulations.gov/docket/FAA-2014-0567, where comments are filed)
- Project: 2014-NM-124-AD
- FR document: 2014-19244
- Official PDF: https://openairdocs.org/files/sha256/f9/d1/f9d1a1cebe309d39f90cbc077a20a4224e5e86c3ffbfb91d55db9899f8c723fe (from https://www.govinfo.gov/content/pkg/FR-2014-08-14/pdf/2014-19244.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/08/14/2014-19244/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9381C9FC430B48AE86257D340045D520.0001
- Page: https://openairdocs.org/proposed/FAA-2014-0567

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This proposed AD was prompted by issuance of revised certification maintenance requirements (CMR) for the horizontal stabilizer trim actuator (HSTA). This proposed AD would require revising the maintenance or inspection program. We are proposing this AD to detect and correct premature wear and cracking of the HSTAs, which could result in reduced structural integrity and reduced control of the airplane due to the failure of system components.

## Notices in this docket

- Aug 14, 2014: Notice of proposed rulemaking (NPRM). (first notice), FR document 2014-19244, comments due Sep 29, 2014 (https://www.federalregister.gov/documents/2014/08/14/2014-19244/airworthiness-directives-bombardier-inc-airplanes)

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