As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LIFT OFF, CREW WAS UNABLE TO TRIM AIRCRAFT (PITCH). CREW ELECTED TO RETURN TO MAINTENANCE FACILITY. INSPECTION FOUND TRIM WHEEL LOOSE ON SHAFT. FOLLOWER JUMPED A TRACK IN THE TRIM WHEEL. THIS CAUSED TRIM WHEEL TO BE THE LIMITING STOP MECHANISM. RECOMMENDED (NOTE) IN MM "REPLACE SELF-LOCKING SCREWS ANYTIME THEY ARE REMOVED, OR APPLY LOCKTITE THREAD LOCKER' DURING RE-INSTALLATION.