# Proposed AD FAA-2008-0365: Dassault Model Mystere-Falcon 900 and Falcon 900EX Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-12-19
- Products: Dassault
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 31, 2008, 73 FR 16784
- Comments due: April 30, 2008
- Became: [AD 2008-12-19](https://openairdocs.org/ad/2008-12-19)
- Docket: FAA-2008-0365 (https://www.regulations.gov/docket/FAA-2008-0365, where comments are filed)
- Project: 2007-NM-274-AD
- FR document: E8-6522
- Official PDF: https://openairdocs.org/files/sha256/74/fe/74fee483661d4a4a53a1963e984bebcb659e251f55a88cf1e33510ea5d9a0d36 (from https://www.govinfo.gov/content/pkg/FR-2008-03-31/pdf/E8-6522.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/03/31/E8-6522/airworthiness-directives-dassault-model-mystre-falcon-900-and-falcon-900ex-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4B04C06177ACE4C28625741E0056804E.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0365

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

This Airworthiness Directive (AD) is issued following the discovery of a potential chafing between the feeder bundle and the right side partition wall separating the cabin from the lavatory at frames 22/23. This chafing may damage the feeder bundle and cause a sustained smoke-generating short-circuit between the feeder and the partition wall made of resistive composite material. Strong smoke and a difficult-to-localize short-circuit may result in a hazardous situation.

The unsafe condition is sustained smoke in the cabin, which may lead to reduced ability of the flightcrew to operate the airplane. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Mar 31, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-6522, comments due Apr 30, 2008 (https://www.federalregister.gov/documents/2008/03/31/E8-6522/airworthiness-directives-dassault-model-mystre-falcon-900-and-falcon-900ex-airplanes)

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