# Airworthiness Directives; Bombardier, Inc. Airplanes
> **Rule** · Final rule. · Published 2014-08-19 · Effective 2014-09-23 · 79 FR 48972
## Document
- **Document number:** 2014-19152
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 79 FR 48972
- **Publication date:** 2014-08-19
- **Effective date:** 2014-09-23
- **FAA docket:** Docket No. FAA-2014-0250
## 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. This AD requires revising the airplane flight manual (AFM) to incorporate an uncommanded yaw motion procedure. We are issuing this AD to prevent in- flight uncommanded rudder movements, which could lead to structural failure and subsequent loss of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/08/19/2014-19152/airworthiness-directives-bombardier-inc-airplanes)
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