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Fri, May 06, 2011

AD: Dassault Falcon

AD NUMBER: 2011-10-01

MANUFACTURER: Dassault-Aviation Model FALCON 7X Airplanes
SUBJECT: Airworthiness Directive 2011-10-01

SUMMARY: This 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:

A design review has revealed a potential dormant failure of the Ram Air Turbine (RAT) heating system. If this failure occurs, it could lead to the freezing of the RAT mechanism [the potential consequence of this heater being inoperative relates primarily to generator rotor/turbine assembly rotation–either the ability to rotate or to rotate at rated RPM for a given airspeed], and the consequent [non-functioning] of the RAT when needed.

Non-functioning of the RAT could result in insufficient electrical power to operate the fly-by-wire system, and subsequent loss of control of the airplane. 

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/55E1AD1D1F0E365C8625788700498416?OpenDocument

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