# Airworthiness Directives; Dassault Aviation Airplanes
> **Rule** · Final rule; request for comments. · Published 2019-12-12 · Effective 2019-12-27 · 84 FR 67834
## Document
- **Document number:** 2019-26704
- **Category:** airworthiness
- **Manufacturer:** Dassault Aviation
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 84 FR 67834
- **Publication date:** 2019-12-12
- **Effective date:** 2019-12-27
- **FAA docket:** Docket No. FAA-2019-0973
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Dassault Aviation Model FALCON 900EX and Model FALCON 2000EX airplanes. This AD was prompted by reports of iced angle-of-attack (AoA) probes after take-off, with associated misleading airspeed indication and/or misleading stall warning. This AD requires revising the existing airplane flight manual (AFM) to provide the flightcrew with updated procedures related to manually activating heating of the AoA probes during line up, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/12/12/2019-26704/airworthiness-directives-dassault-aviation-airplanes)
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