What was found
FLIGHT 6097, CVG TO GSP. CREW RECEIVED A FLAP FAIL MESSAGE AND SPS ADVANCE MESSAGE WHILE CLIMBING THROUGH 1300 FEET. THE ACFT RETURNED TO CVG AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND CMC MESSAGING POINTING TO A FLAP FEEDBACK POSITION ERROR. ALL THE WIRING WAS CHECKED IAW THE FIM PROCEDURES WITH NO DEFECTS NOTED. THE FLAP POWER DRIVE UNIT WAS REPLACED ALONG WITH THE FLAP HANDLE. THERE WERE NO FURTHER DEFECTS NOTED ON THE TEST FLIGHT THAT FOLLOWED. (S)