As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS PART FOUND BROKEN AT STOPS AFTER PILOTS REPORTED MAIN DOOR ASSY 'LOOSE' WHEN OPEN AND PERSON STEPS ON DOOR STEPS (UNSTABLE). CAUSE HAS BEEN DETERMINED AS RAPID OR HARSH OPERATION OF THE DOOR LOCKING HANDLES WHEN CLOSING THE DOOR. SUBMITTER SUGGESTS CARE BE EXERCISED, WHEN OPERATING THE DOOR, BY FLIGHT CREWS AND GROUND PERSONNEL.