As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A WHISTLING NOISE IN THE NOSE AREA ON CLIMBOUT OF CLT. CREW ELECTED TO RETURN TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND THE GROUND POWER DOOR OPEN. MAINTENANCE SECURELY CLOSED THE DOOR. NO DEFECTS OR DAMAGE NOTED AT THIS TIME. AIRCRAFT WAS RELEASED FOR SERVICE.