What was found
FLT 482 - SNA-RNO - ON TAKEOF, THE FORWARD ENTRY DOOR FAILED TO SEAL. DIVERTED TO BUR. ON ARRIVAL OF AIRCRAFT, NOTICED L1 DOOR NOT CLOSED PROPERLY AND SEALED, NOTICED GAP BETWEEN FLOOR. OPEN/CLOSED DOOR, NO DEFECTS NOTED. DOOR IMPROPERLY CLOSED. FLIGHT VERIFICATION OK. (M)