As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 2339 - ON CLIMB-OUT FROM CLT, THE FORWARD ENTRY DOOR BEGAN MAKING A VERY LOUD AIR NOISE. PRESSURIZATION WAS NORMAL. FLIGHT RETURNED TO FIELD AT CLT AND LANED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE FORWARD ENTRY DOOR SEAL PER MM 52-09-13. PRESSURIZED AIRCRAFT. NO LEAKS NOTED. (M)