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Wed, Aug 24, 2011

AD: Embraer

AD NUMBER: 2011-17-15

MANUFACTURER: Embraer–Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-500 Airplanes
SUBJECT: Airworthiness Directive 2011-17-15
ACTION: Final Rule

SUMMARY: This AD results from mandatory continuing airworthiness information (MCAI) issued 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:

It has been found that moisture may accumulate and freeze, under certain conditions, in the gap between the AOA vane base assembly and the stationary ring of the sensor's body. If freezing occurs both AOA sensors may get stuck and the Stall Warning Protection System (SWPS) will be no longer effective without alerting. This may result in inadvertent aerodynamic stall and loss of controllability of the airplane.

DATES: This AD becomes effective September 26, 2011.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/75C67DC208067CAA862578F4004B67A1?OpenDocument

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