As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN DOOR WILL NOT SEQUENCE PROPERLY TO LOCK. VENT DOOR WILL NOT CLOSE IN DOOR OPERATION. PASSENGER DOOR CAS LIGHT ILLUMINATED. RED DOOR UNLOCKED FLAG VISIBLE. THE MED KEY HOLE FOR THE EXTERNAL T-HANDLE WAS IN THE "LOCKED" POSITION. WITH THE KEY, PLACED IT IN THE "UNLOCK" POSITION. T-HANDLE STOWED AND THE VENT DOOR CLOSED. IAW AMM CH. 52-10-00.