As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE CREW RETRACTED THE LANDING GEAR BUT STILL HEARD A LOUD RUSHING AIR NOISE. THE CMH TOWER CONFIRMED THE NOSE GEAR DOORS WERE STILL OPEN AFTER A FLYBY. THE AIRCRAFT RETURNED TO CMH AND LANDED WITHOUT INCIDENT. MAINTENANCE COULD NOT DUPLICATE THE FAULT AFTER 15 GEAR SWINGS THEN FOUND THE NOSE LANDING GEAR UPLOCK HOOK PROX SWITCH CORRODED. THE UPLOCK HOOK PROX SWITCH WAS REPLACED IAW EMB 145 MM 32-63-02 WITH NO FURTHER DEFECTS NOTED.