What was found
SFO - FLAP CONTROL FAULT REPORTED ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. UPON FLAP RETRACTION INBOARD PAIR REMAINED AT 15 DEGREES WHILE OUTBOARD AND NACELLE FLAPS RETRACTED NORMALLY. MAINTENANCE ELECTRICAL CONNECTORS AT INBOARD FLAP ACTUATORS. FLAP SYSTEM OPERATIONAL CHECK NORMAL. PROBLEM REOCCURED ON SUBSEQUENT TAKEOFF ATTEMPT. MAINTENANCE REPLACED LEFT INBOARD FLAP ACTUATOR. AIRCRAFT RETURNED TO SERVICE. (M)