What was found
(CAN) FLAP FAIL MESSAGE COME ON DURING CRUISE AT ALT FL330 WITH NO FLAP SELECTION MADE. AIRCRAFT RETURN TO ORIGINATING STATION, MAINTENANCE REPLACED THE BPSU AND FECU BUT NO FIX. FURTHER INVESTIGATION REVEALED SOME BURNED WIRES AT LT BPSU CONNECTOR. TEMPORARY REPAIRS CARRIED OUT AND AIRCRAFT FERRIED. AIRCRAFT IS NOW UNDERGOING A HEAVY CHECK AND THE SNAG IS STILL BEING WORKED ON. MORE SPECIFICS OF THE DEFECT RECTIFICATION TO FOLLOW. (TC NR 20070601004)