As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN DOOR WON'T OPEN, ACTUATING MECHANISM JAMMED. INSPECTED AND FOUND MAIN DOOR FORWARD LOCK JAMMING. ADJUSTED MAIN CABIN DOOR CABLE D TO FRONT LOCK BOX. FOUND AFT LOCKING-MECHANISM CAM OVER CENTER. THE LOCKING FORCE OUT OF LIMITS (ON LOW SIDE WITH FORCE GAUGE). ADJUSTED OVER CENTER FORCE BY DECREASING LENTH OF ROD III, ON AFT CAM. OPS CHECK SAT