As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE CREW HEARD SOUNDS FROM THE RT SIDE OF THE FWD FUSELAGE THAT INDICATED AN ACCESS PANEL WAS OPEN. THE FLIGHT RETURNED TO CLT. MAINTENANCE FOUND THE GROUND SERVICE PANEL (HEADSET) ACCESS DOOR OPEN. THE DOOR WAS VISUALLY INSPECTED. NO DAMAGE WAS FOUND. THE DOOR WAS SECURED CLOSED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.