As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JAX - FLT NR 8645 - RETURN TO JAX DUE TO THE MAIN CABIN DOOR NOT BEING CLOSED PROPERLY. THE CAPTAIN DID NOT RECEIVE ANY LIGHTS IN THE COCKPIT PRIOR TO DEPARTURE THAT THE DOOR WAS NOT CLOSED. MAINTENANCE INSPECTED THE DOOR. NO DEFECTS NOTED. (M)