What was found
FLT 4614 - DURING CRUISE FROM AVP-ATL, AT APPROXIMATELY 30,000 FEET, THE CREW RECEIVED A FLAPS FAIL CAUTION MESSAGE WITH THE FLAPS AT ZERO DEGREES. THE CREW COMPLIED WITH THE QRH AND DECLARED AN EMERGENCY WITH THE EMERGENCY VEHICLES DISPATCHED. THE AIRCRAFT PERFORMED A ZERO FLAP LANDING IN ATL, WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LEFT BPSU. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)