# Proposed AD 99-NM-11-AD: Dassault Model Mystere-Falcon 900, Falcon 900EX, and Falcon 2000 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-19-24
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 28, 1999, 64 FR 34584
- Comments due: July 28, 1999
- Became: [AD 99-19-24](https://openairdocs.org/ad/99-19-24)
- Docket: 99-NM-11-AD
- FR document: 99-16331
- Official PDF: https://openairdocs.org/files/sha256/70/2e/702e3c224262936ad14a27426ab67786369c34905a17ea0de2d9f1989bc9a0d0 (from https://www.govinfo.gov/content/pkg/FR-1999-06-28/pdf/99-16331.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/06/28/99-16331/airworthiness-directives-dassault-model-mystere-falcon-900-falcon-900ex-and-falcon-2000-series
- Page: https://openairdocs.org/proposed/99-NM-11-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dassault Model Mystere- Falcon 900, Falcon 900EX, and Falcon 2000 series airplanes. This proposal would require replacement of the elevator auxiliary artificial feel unit (AFU) with a new elevator auxiliary AFU. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent failure of the elevator auxiliary AFU. Failure of an AFU, coupled with a control linkage disconnection, could result in reduced controllability of the airplane.

## Notices in this docket

- Jun 28, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-16331, comments due Jul 28, 1999 (https://www.federalregister.gov/documents/1999/06/28/99-16331/airworthiness-directives-dassault-model-mystere-falcon-900-falcon-900ex-and-falcon-2000-series)

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