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Sun, Apr 17, 2011

AD: Fokker

AD NUMBER: 2011-08-02

MANUFACTURER: Fokker Services B.V. Model F.27 Mark 050 Airplanes.
SUBJECT: Airworthiness Directive 2011-08-02

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:

The FAA has published Special Federal Aviation Regulation (SFAR) 88, and the Joint Aviation Authorities (JAA) has published Interim Policy INT/POL/25/12. The design review conducted by Fokker Services on the Fokker 50 and Fokker 60 in response to these regulations revealed that, if chafing occurs between the Fuel Quantity Probe (FQP) and the probe wiring, with additional factors, this may result in an ignition source in the wing tank vapour space.

This condition, if not corrected, in combination with flammable fuel vapours, could result in a wing fuel tank explosion and consequent loss of the airplane. 

FMI:  http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/822366547B85D2BD862578710048D338?OpenDocument

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