What was found
WHILE TAXIING TO GATE AFTER FLIGHT NR 2 ENGINE SHUT DOWN, GROUND PERSONAL REPORTED BLACK SMOKE, NO ABNORMAL INDICATIONS IN COCKPIT. OPERATED ENGINES UP TO TAKEOFF POWER ALL PARAMETERS NORMAL. SUSPECTED FUEL ICE PROBLEM. OPS CHECK FUEL ANTI-ICE PER MM 73-14-00, NO DEFECTS NOTED.