As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW OF FLIGHT 2258 RETURNED TO MEM AFTER HEARING A LOUD SQUEAL AND WIND NOISE FROM THE NOSE OF THE AIRCRAFT DURING CLIMBOUT. MAINTENANCE FOUND THE EXTERNAL SERVICE PANEL DOOR OPEN. THE DOOR WAS INSPECTED AND OPERATIONALLY CHECKED IAW CRJ700 AMM 52-45-36-400-801-A01. NO DAMAGE WAS FOUND. THE DOOR WAS SECURED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.