What was found
AIRCRAFT WAS HOLDING ON TAXIWAY WITH WINDS OVER 40 KNOTS AND BLOWING SNOW. A/C WAS BEHIND A/C WHICH WAS KICKING UP ADDITIONAL SNOW. PILOT PUT ON THE COWL ANTI-ICE. APPROXIMATELY ONE MINUTE LATER THE RIGHT ENGINE SHUTDOWN UNCOMMANDED, AIRCRAFT RETURNED TO HANGAR. ENGINE WAS BORESCOPED, NO DEFECTS, FUEL WAS TESTED, NO CONTAMINATION. CHECKLIST FOR ENGINE FLAMEOUT WAS PERFORMED WITH NO DEFECTS NOTED. REPLACED MAIN FUEL CONTROL UNIT. PERFORMED ENGINE RUNS, ALL PARAMETERS NORMAL. AIRCRAFT WAS RETURNED TO SERVICE. (NE03200303671)