As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKE OFF A/C YAWED TO THE RIGHT ABRUPTLY. WE WERE ABLE TO APPLY LEFT RUDDER PRESSURE AND CONTROL THE AIRPLANE WITH RUDDER, BUT YAW TRIM WAS STUCK IN FULL RIGHT POSITION. AFTER SEVERAL MINUTES OF FLYING WE WERE ABLE TO GET YAW TRIM TO WORK NORMALLY AND RECENTERED TRIM. ACCOMPLISHED ADJUSTMENT/TEST OF YAW TRIM ACUTATOR IAW EMB 145 AMM 27-24-00. NO DEFECTS NOTED AT THIS TIME.