# Proposed AD FAA-2006-23886: Dassault Model Falcon 900EX Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-09-04
- Products: Dassault
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 15, 2006, 71 FR 7874
- Comments due: March 17, 2006
- Became: [AD 2006-09-04](https://openairdocs.org/ad/2006-09-04)
- Docket: FAA-2006-23886 (https://www.regulations.gov/docket/FAA-2006-23886, where comments are filed)
- Project: 2005-NM-255-AD
- FR document: E6-2175
- Official PDF: https://openairdocs.org/files/sha256/dc/a8/dca8523df64be59314a415e0fbf04d077d8bec36b2233e01d05390ddd7ce9878 (from https://www.govinfo.gov/content/pkg/FR-2006-02-15/pdf/E6-2175.pdf)
- Federal Register: https://www.federalregister.gov/documents/2006/02/15/E6-2175/airworthiness-directives-dassault-model-falcon-900ex-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/72C3BEA11089B61886257116005FA3AB.0001
- Page: https://openairdocs.org/proposed/FAA-2006-23886

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Dassault Model Falcon 900EX airplanes. This proposed AD would require inspecting the number 2 engine left- and right-hand forward mounts for missing rivets and installing rivets if necessary. This proposed AD results from reports of two missing rivets in the front section of the central engine mast discovered on airplanes in service and in production. We are proposing this AD to detect and correct missing rivets in the front section of the central engine mast, which could result in reduced structural integrity of the central engine mast, possible separation of the engine from the airplane during flight, and consequent loss of control of the airplane.

## Notices in this docket

- Feb 15, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-2175, comments due Mar 17, 2006 (https://www.federalregister.gov/documents/2006/02/15/E6-2175/airworthiness-directives-dassault-model-falcon-900ex-airplanes)

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