As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, FLIGHT ATTENDANT ADVISED LOUD NOISE AD FLOW FROM LEFT AFT OVERWING EXIT. RETURNED FOR LANDING. FOUND AFT LEFT OVERWING EMERGENCY EXIT DOOR NOT PROPERLY SEATED. RE-SEATED DOOR AND PRESSURIZED AIRCRAFT TO 6 PSI. DOOR CHECKED GOOD WITH NO LEAKS NOTED, OK FOR SERVICE. (M)