# Proposed AD FAA-2017-0562: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-22-08
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 21, 2017, 82 FR 28266
- Comments due: August 7, 2017
- Became: [AD 2017-22-08](https://openairdocs.org/ad/2017-22-08)
- Docket: FAA-2017-0562 (https://www.regulations.gov/docket/FAA-2017-0562, where comments are filed)
- Project: 2017-NM-027-AD
- FR document: 2017-12798
- Official PDF: https://openairdocs.org/files/sha256/02/96/0296f8f1fd9ca6e14bb9c79c1fef545302d88a59ec13144c9bdaff473a0a6fc8 (from https://www.govinfo.gov/content/pkg/FR-2017-06-21/pdf/2017-12798.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/06/21/2017-12798/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/11573686B132D62886258146004CC65C.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0562

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), Model CL-600-2D15 (Regional Jet Series 705), Model CL-600- 2D24 (Regional Jet Series 900), and Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD was prompted by a report that a number of rubber bull gear (RBG) wheels installed in the horizontal stabilizer trim actuator (HSTA) were manufactured using an incorrect material specification. This proposed AD would require replacement of the affected RBG wheels. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 21, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-12798, comments due Aug 7, 2017 (https://www.federalregister.gov/documents/2017/06/21/2017-12798/airworthiness-directives-bombardier-inc-airplanes)

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