As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEPARTING JUNEAU ABOUT 5 MINUTES OUT, AND THE LEFT MAIN CABIN DOOR WAS NOTICED AJAR. AIRCRAFT RETURNED TO BASE AND PILOT REPORTED THAT THE BOTTOM AND MIDDLE PINS WERE GOOD BUT THAT THE UPPER LATCH WAS NOT ENGATED. INSTRUCTED ATTENDANTS ON PROPER DOOR LATCHING AND ALSO HAD THE MECHANICS REWORK THE LATCH PLATE TO ALLOW BETTER LOCKING. (M)