As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT RETURNED TO FIELD AFTER TAKEOFF. CREW DISCOVERED THAT AILERON AND RUDDER TRIM WERE DEFLECTING SEVERELY TO THE LEFT. CREW THEN CONTACTED ATC AND DECLARED AN EMERGENCY. FLIGHT LANDED SAFELY AND TAXIED BACK TO GATE. CREW REPORTS LANDING OVERWEIGHT. CABIN WAS NOT BRACED. AILERON TRIM AND RUDDER TRIM STUCK FULL LEFT ON CLIMBOUT / REMOVED AND REPLACED AILERON AND RUDDER TRIM CONTROL PANEL IAW CRJ700 AMM 27ˆ’12ˆ’10ˆ’000/400ˆ’801-PSA OPS CHECKS GOOD AT THIS TIME AIRCRAFT OK FOR SERVICE."