What was found
MAIN DOOR LOCK: WHEN CLOSING THE MAIN CABIN DOOR THE PUSH BUTTON IN THE HANDLE WOULD NOT POP OUT WHEN THE HANDLE WAS IN THE CLOSED POSITION AND THE DOOR WOULD NOT LOCK. THE HANDLE MOVED FREELY FROM THE CLOSED TO OPEN POSITION AND THE CABIN DOOR OPEN CAUTION WOULD NOT EXTINGUISH. SEE PHOTO AND VIDEO. CORRECTIVE ACTION: CLEANED AND LUBRICATED MAIN CABIN DOOR HANDLE. OPS CHECKED GOOD. NO FURTHER DEFECTS REF CE-680 SPM 20-00-00.