# Airworthiness Directives; Bombardier, Inc., Airplanes
> **Rule** · Final rule. · Published 2019-07-19 · Effective 2019-08-23 · 84 FR 34772
## Document
- **Document number:** 2019-15360
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 84 FR 34772
- **Publication date:** 2019-07-19
- **Effective date:** 2019-08-23
- **FAA docket:** Docket No. FAA-2018-1008
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by reports indicating there is a possibility of excessive error in the signal generated by the angle of attack (AOA) transducer. This AD requires replacing certain AOA transducers. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/07/19/2019-15360/airworthiness-directives-bombardier-inc-airplanes)
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