What was found
NR 2 PROPELLER FLUX OF 20 RPM ASSOCIATED WITH TORQUE FLUX OF 6%, RETURNED TO FIELD, PROPELLER SYNC OFF AT TIME OF FLUX, CYCLED PROPELLER SYNC DURING FINAL AND SURGE SELF CORRECTED AND ENGINES OPERATE NORMAL. GROUND RAN AT TAKEOFF POWER, COULD NOT DUPLICATE DISCREPANCY. FOUND NR 1 SIDE SYNCHROPHASE CONNECTOR HOOKED WITH PCU, DISCONECTED CONNECTOR. RAN AIRCRAFT PER RUNUP MANUAL NO DEFECTS NOTED. ON 10 JANUARY 2008, NR 1 PROPELLER MAX RPM WENT TO 1214; REPLACED PCU, OPERATIONAL AND LEAK CHECK GOOD.