What was found
AFTER USING THE CABIN DOOR FAILS TO LIFT ABNORMAL CHECKLIST TO CLOSE THE MAIN CABIN DOOR, THE AMBER CABIN DOOR OPEN CAS MESSAGE AND AMBER LIGHT ON THE DOOR REMAINS. AFTER OPERATING THE CABIN DOOR MULTIPLE TIMES, COULD NOT GET DISCREPANCY TO DUPLICATE. CABIN DOOR CLOSES, LATCHES, AND LOCKS AS NECESSARY, AND CABIN DOOR OPEN CAS MESSAGE CLEARS EACH TIME THE DOOR IS LOCKED. OPERATIONAL CHECK PERFORMED IAW 680A AMM 52-10-00