# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule; request for comments. · Published 2020-01-06 · Effective 2020-01-21 · 85 FR 457
## Document
- **Document number:** 2019-28365
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 85 FR 457
- **Publication date:** 2020-01-06
- **Effective date:** 2020-01-21
- **FAA docket:** Docket No. FAA-2019-0993
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by a report of a wing stall (wing drop/ uncommanded roll) during landing flare, due to ice on the wing leading edges that was not detected by the anti-ice system. This AD requires revising the existing airplane flight manual (AFM) to include a limitation and normal operating procedure for the wing anti-ice system. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/01/06/2019-28365/airworthiness-directives-bombardier-inc-airplanes)
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