As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT DUR TO A LEFT FORWARD EMERGENCY EXIT CAUTION MESSAGE. FLIGHT ATTENDANT REPORTED HEARING AIR RUSHING SOUND. THE AIRCRAFT LANDED SAFELY AT CLT. MAINTENANCE FOUND THE LEFT HAND EMERGENCY EXIT HATCH HANDLE SEAL LEAKING AND REPLACED IT. A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED.