# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2017-08-28 · Effective 2017-10-02 · 82 FR 40686
## Document
- **Document number:** 2017-17590
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 40686
- **Publication date:** 2017-08-28
- **Effective date:** 2017-10-02
- **FAA docket:** Docket No. FAA-2017-0512
## Abstract

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This AD was prompted by reports of failures of the landing gear alternate-extension system. This AD requires replacement of certain nose landing gear and main landing gear electro-mechanical actuators. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/08/28/2017-17590/airworthiness-directives-bombardier-inc-airplanes)
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