As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RDU - INFLIGHT LGA-MIA. CREW REPORTED RUDDER TRIM STUCK AT 3.5 UNITS ON CLIMBOUT FROM LGA REQUIRED 3 TO FOUR UNITS OF AILERON TO FLY LEVEL. EMERGENCY DECLARED LANDED RDU WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT RUDDER RATIO MODULE. SYSTEM GROUND CHECK NORMAL OPERATION.