# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2018-03-15 · Effective 2018-04-19 · 83 FR 11404
## Document
- **Document number:** 2018-05021
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 11404
- **Publication date:** 2018-03-15
- **Effective date:** 2018-04-19
- **FAA docket:** Docket No. FAA-2017-0626
## Abstract

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (CL-604 Variant) airplanes. This AD was prompted by reports of in-flight uncommanded rudder movements on airplanes with an installation similar to the installation on certain Model CL-600-2B16 (CL-604 Variant) airplanes. This AD requires modification of the wiring harness for the yaw damper control system. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/03/15/2018-05021/airworthiness-directives-bombardier-inc-airplanes)
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