# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2023-09-14 · Effective 2023-10-19 · 88 FR 63004
## Document
- **Document number:** 2023-19901
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 88 FR 63004
- **Publication date:** 2023-09-14
- **Effective date:** 2023-10-19
- **FAA docket:** Docket No. FAA-2023-1052
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This AD was prompted by an uncommanded flap extension accompanied by a flaps fail caution message during climb. This AD requires initial and repetitive operational tests of the flap control system. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/09/14/2023-19901/airworthiness-directives-bombardier-inc-airplanes)
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