# Airworthiness Directives; Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), CL-600-2B16 (CL-601-3A, CL-601-3R, & CL-604 (Including CL-605 Marketing Variant)) Airplanes, and Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes
> **Rule** · Final rule; request for comments. · Published 2008-10-16 · Effective 2008-10-31 · 73 FR 61336
## Document
- **Document number:** E8-24549
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 73 FR 61336
- **Publication date:** 2008-10-16
- **Effective date:** 2008-10-31
- **FAA docket:** Docket No. FAA-2008-1096
## Abstract

The FAA is superseding an existing airworthiness directive (AD) that applies to all Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes and Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) airplanes. The existing AD currently requires revising the airplane flight manuals (AFMs) to include new cold weather operations limitations and procedures. This AD requires revising the AFMs to include a requirement for flightcrew training regarding enhanced take-off procedures and winter operations. This AD results from reports of uncommanded roll during take-off. We are issuing this AD to prevent possible loss of control on take-off resulting from even small amounts of frost, ice, snow, or slush on the wing leading edges or forward upper wing surfaces.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2008/10/16/E8-24549/airworthiness-directives-bombardier-model-cl-600-1a11-cl-600-cl-600-2a12-cl-601-cl-600-2b16)
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