As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON CLIMBOUT THROUGH 7000 FT THE RUDDER NEEDED MORE AND MORE TRIM TO REMAIN CENTERED. CONTINUED TO ADD LEFT RUDDER TRIM UNTIL THE HALF WAY POINT. IT TOOK MORE RUDDER TRIM AND WOULD NOT CENTER. THE RUDDER THEN VIOLENTLY SWUNG BACK THE OTHER DIRECTION. OPERATION WAS NORMAL AFTER THAT, ITEM IS UNDER INVESTIGATION.