What was found
UPON LIFT OFF FROM PDX, STRONG FUEL SMELL NOTED IN CABIN AND FLIGHT DECK. APU BLEED WAS POWERING BOTH PACKS. INSPECTED APU AND BLEED SYSTEM. NO FAULTS NOTED. REMOVED AND REPLACED APU FUEL CONTROL UNIT. OPS CHECK GOOD IAW ALLIED SIGNAL MM 49-00-00. P/N: 3882730-9, S/N ON: A1124, S/N OFF: 15683.