What was found
UPON REACHING CRUISE FLIGHT WITH THE AUTOPILOT ENGAGED, THE CREW BEGAN TO TRIM OUT THE AIRPLANE FOR LEVEL FLIGHT AND AS THE TRIM WHEEL WAS TURNING THEY GOT A TRIM IN MOTION WARNING. IT REPEATED MULTIPLE TIMES AND EVENTUALLY SAID CHECK PITCH TRIM. THE CREW DISCONNECTED THE AUTOPILOT AND HAND FLEW THE AIRPLANE, AS THE PILOT FLYING ATTEMPTED TO TRIM THE AIRPLANE OUT FOR LEVEL FLIGHT HE NOTICED THAT NO MATTER HOW MUCH NOSE DOWN TRIM HE PUT IN THE AIRPLANE STILL WANTED TO CLIMB, THEY DECIDED TO DECLARE AN EMERGENCY DUE TO A POTENTIAL FLIGHT CONTROL ISSUE.