As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DAY - FLT 4196 - DURING CLIMB-OUT FROM DAY, FIRST OFFICERS PITCH TRIM SWITCH WOULD NOT WORK. ALL OTHER TRIM SWITCHES FUNCTIONED NORMALLY IN NORMAL AND STANDBY POSITIONS. MAINTENANCE FOUND FIRST OFFICERS TRIM SWITCH TO BE STICKING DUE TO DIRT/GRIME CONTAMINATION. CLEANED SWITCH AND PERFORMED SYSTEM OPERATIONS TEST PER AMM 27-40-00. AIRCRAFT WAS RETURNED TO SERVICE. (M)