Airworthiness Directive · Amendment 39-14574 · Dassault Model Falcon 900EX Airplanes
Dassault Model Falcon 900EX Airplanes
This AD applies to Dassault Model Falcon 900EX airplanes, certificated in any category, having serial numbers 1 through 137 inclusive.
The FAA is adopting a new airworthiness directive (AD) for certain Dassault Model Falcon 900EX airplanes. This AD requires inspecting the number 2 engine left- and right-hand forward mounts for missing rivets, and installing rivets if necessary. This 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 issuing 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.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
The term “service bulletin,” as used in this AD, means the Accomplishment Instructions of Dassault Service Bulletin F900EX-220, Revision 1, dated July 29, 2005. Although the service bulletin referenced in this AD specifies to submit information to the manufacturer, this AD does not include such a requirement.
Prior to accumulating 7,500 total flight hours, or within 6 months after the effective date of this AD, whichever is later: Do a general visual inspection of the number 2 engine left- and right-hand forward mounts for missing rivets, in accordance with the service bulletin. If any rivet is missing, before further flight, install the new rivet, in accordance with the service bulletin.
Note 1: For the purposes of this AD, a general visual inspection is: “A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made from within touching distance unless otherwise specified. A mirror may be necessary to ensure visual access to all surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.”
Inspecting for and installing rivets is also acceptable for compliance with the requirements of paragraph (g) of this AD if done before the effective date of this AD in accordance with the Accomplishment Instructions of Dassault Service Bulletin F900EX-220, dated April 14, 2004.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
