# Proposed AD FAA-2017-0494: Dassault Aviation Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-19-17
- Products: Dassault
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 30, 2017, 82 FR 24606
- Comments due: July 14, 2017
- Became: [AD 2017-19-17](https://openairdocs.org/ad/2017-19-17)
- Docket: FAA-2017-0494 (https://www.regulations.gov/docket/FAA-2017-0494, where comments are filed)
- Project: 2016-NM-126-AD
- FR document: 2017-10545
- Official PDF: https://openairdocs.org/files/sha256/4e/97/4e9758d75ee5457109bc98ed5f8f300501275600220cb0dfe6dee241f17f7a34 (from https://www.govinfo.gov/content/pkg/FR-2017-05-30/pdf/2017-10545.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/05/30/2017-10545/airworthiness-directives-dassault-aviation-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4280D602121888A8862581300050EDAA.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0494

## Summary

We propose to supersede Airworthiness Directive (AD) 2016-17- 02 for certain Dassault Aviation Model FALCON 900EX and FALCON 2000EX airplanes. AD 2016-17-02 currently requires revising the airplane flight manual (AFM) to include procedures to follow when an airplane is operating in icing conditions. AD 2016-17-02 also provides optional actions after which the AFM revision may be removed from the AFM. Since we issued AD 2016-17-02, we have determined additional actions are necessary to address the identified unsafe condition. This proposed AD would retain the requirement of AD 2016-17-02 and, in addition, require a detailed inspection of the wing anti-ice system ducting (anti-ice pipes) for the presence of a diaphragm, and replacement of ducting or re-identification of the ducting part marking. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 30, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-10545, comments due Jul 14, 2017 (https://www.federalregister.gov/documents/2017/05/30/2017-10545/airworthiness-directives-dassault-aviation-airplanes)

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