What was found
THE CREW REPORTED THAT INBOUND TO BLK THEY DROPPED FLAPS TO 10, WHEN MOVING TO 20 THEY GOT A FLAPS ASYM MSG AND FLAPS WOULD NOT MOVE OUT OF 10, THEY MADE SEVERAL ATTEMPTS TO RESET TO NO AVAIL. THEY DIVERTED TO CLE FOR THE LONGER RUNWAY. AN EMERGENCY WAS DECLARED. THEY LANDED WITH NO INCIDENT. AFTER LANDING, THEY TRIED THE FLAPS AND WERE ABLE TO GET THEM BACK TO 0. THEY OPERATED FLAPS SEVERAL TIMES ON THE GROUND FULL DOWN & FULL UP, WITH NO ISSUES. MX FOUND CANNON PLUG ON FLAP POSITION TRANSMITTER TO NOT BE FULLY SEATED. REMOVED PLUG AND FOUND MOISTURE INSIDE. CLEANED PLUG AND INSTALLED. NO DEFECTS NOTED.