# Airworthiness Directives; Bombardier, Inc. Airplanes
> **Rule** · Final rule. · Published 2013-03-20 · Effective 2013-04-24 · 78 FR 17073
## Document
- **Document number:** 2013-05587
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 17073
- **Publication date:** 2013-03-20
- **Effective date:** 2013-04-24
- **FAA docket:** Docket No. FAA-2012-0641
## Abstract

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model CL-600-2A12 (CL-601) and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This AD was prompted by reports of jamming/malfunctioning of the left-hand engine thrust control mechanism. This AD requires modifying the left-hand engine upper core-cowl. We are issuing this AD to prevent jamming/ malfunctioning of the left-hand engine thrust control mechanism, which could lead to loss of control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/03/20/2013-05587/airworthiness-directives-bombardier-inc-airplanes)
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