What was found
ON DESCENT FLAP, ADVANCED SWS, CONTROL FAULT, OUTBOARD PAIR FLASHING. QRH WAS FOLLOWED BUT SYSTEM DID NOT RESET. FOUND MOISTURE IN CANNON PLUGS, CLEANED. USING PARKER FLAP TROUBLESHOOTING GUIDE, FOUND LEFT INBOARD FLAP SLOW TO EXTEND. REPLACED LEFT INBOARD ACTUATOR IAW 27-50-07 AND RII 27-307. CYCLED SEVERAL TIMES OPS CHECK GOOD WITH NO LEAKS NOTED.PN ON 320300-1005 SN ON 1107 SN OFF 1232