# Proposed AD 98-NM-377-AD: Dassault Model Falcon 2000 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-21-20
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 12, 1999, 64 FR 43961
- Comments due: September 13, 1999
- Became: [AD 99-21-20](https://openairdocs.org/ad/99-21-20)
- Docket: 98-NM-377-AD
- FR document: 99-20892
- Official PDF: https://openairdocs.org/files/sha256/29/65/2965893d2069b40cdbd875c438960c1bd8a341baaf643034c6e8898d9f15ab2d (from https://www.govinfo.gov/content/pkg/FR-1999-08-12/pdf/99-20892.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/08/12/99-20892/airworthiness-directives-dassault-model-falcon-2000-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-377-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dassault Model Falcon 2000 series airplanes. This proposal would require a detailed inspection for interference between the safety-lock hooks and upper cowls, and corrective action, if necessary. This proposal also would require modification of the attachment supports of the inner locking hooks; and a detailed inspection of the safety-lock hooks on the lower engine cowl for proper operation and for clearance between the outer edges of the upper and lower cowls; and corrective actions, if necessary. 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 unintended disengagement of the engine cowl hooks during ground maintenance, which could result in in-flight loss of an engine cowl from the airplane and possible damage to the airplane and persons or property on the ground.

## Notices in this docket

- Aug 12, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-20892, comments due Sep 13, 1999 (https://www.federalregister.gov/documents/1999/08/12/99-20892/airworthiness-directives-dassault-model-falcon-2000-series-airplanes)

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