As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THE PITCH TRIM DID NOT WORK WITH AUTO-PILOT ELECTRIC PITCH TRIM ON BOTH THE LEFT AND RIGHT SIDE BELOW 200KTS ON DESCENT. OPERATIONS WERE CONTINUED UNDER MEL 27-31-01. THE BASE MAINTENANCE TEAM DETERMINED THE ELEVATOR ELECTRIC TRIM MOTOR SERVO DRUM DRIVE SHAFT REQUIRED ADJUSTMENT PER AMM. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.