As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CLOSING THE MAIN ENTRY DOOR FROM INSIDE, THE DOOR CLOSED HALFWAY UP AND STOPPED, RETURNED TO FULL OPEN. THIS HAPPENED TWO DIFFERENT TIMES WITH THE DOOR CLOSING EACH TIME AFTER THE EVENT. ARRIVED AT AIRCRAFT AND OPERATED DOOR 25 TIMES AND COULD NOT DUPLICATE FAULT CONTACTED MCC AND INFORMED THEM OF THE FINDINGS AND AGREED TO SIGN OFF OPS CHECK GOOD ALL WORK WAS DONE IN REF TO CE-680A AMM 52-10-00.