What was found
FLT 4386 - DURING APPROACH INTO CVG FROM MHT, THE CREW RECEIVED A FLAPS FAIL MESSAGE WITH THE FLAPS SELECTED TO EIGHT DEGREES. EMERGENCY VEHICLES WERE REQUESTED TO BE ON STANDBY AS A PRECAUTION. THE AIRCRAFT LANDED SAFELY IN CVG. MAINTENANCE REMOVED AND REPLACED THE LEFT BRAKE POSITION SENSOR UNIT (BPSU) AND THE FLAPS POWER DRIVE UNIT (PDU). OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)