As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS A GRINDING NOISE HEAR WHEN CRUISE TRIM ENGAGED. MANUAL TRIM WAS JAMMED IN THE NOSE UP POSITION. AIRCRAFT RETURNED TO DEN. REPLACED THE MAIN STAB TRIM ACTUATOR, CRUISE STAB TRIM ACTUATOR AND STAB BRAKE ASSY. SYSTEM OPERATIONS CHECK NORMAL.