What was found
KDEN - FLT 2801 - NR 3 ENGINE HUNG START, FAILS TO ACCELERATE PAST IDLE RPM, ANTI-ICE ON OR OFF. REMOVED AND REPLACED NR 3 ENGINE FUEL CONTROL UNIT PER MM 73-20-00. PERFORMED ENGINE RUN UP IAW ARROW AIR DC-8 MM JC 6527. ALL PARAMETERS NORMAL.