As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 237 - AFTER TAKEOFF, CREW REPORTED THEY COULD NOT PRESSURIZE THE AIRCRAFT. FLIGHT ATTENDANTS REPORTED THAT THE L2 DOOR WAS NOT CLOSED PROPERLY AND WAS MAKING A LOUD NOISE. FLIGHT RETURNED TO CLT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE INSPECTED THE DOOR AND FOUND NO DEFECTS. DOOR WAS CLOSED AND AIRCRAFT RELEASED FOR SERVICE. (M)