What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS AFTER #2 ENG START (W/IN 60 SECONDS) "F/CTL-FALP SYSTEM 1 FAULT" ILLUMINATED. WHILE ON TELCOM WITH US MOC, ECAM MSG EXTINGUISHED ON ITS OWN. AFTER FLAP RETRACTION (+ 1 MIN) "F/CTL-FLAP SYS 2" (REPEAT 2) ILLUMINATED ON ECAM WITH FLAP POSITION INDICATOR TURNED AMBER. ECAM THEN DISPLAYED "FLAP FAULT" W/OUT ANY NUMBER DISPLAYED. LATER SYSTEM 1 FAULT RETURNED. ACCOMPLISHED ECAM PROCEDURE, (GPWS FLAP MODE PRESSED) BUT WITHIN 2 MINUTES ALL ECAM WARNINGS EXTINGUISHED. DE-SELECTED GPWS FLAP MODE (BACK TO NORMAL POSITION). PLEASE NOTE EXTENSIVE HISTORY OF FLAP FAULTS. AT T.O. +28 MINS, ECAM MSG "F/CTLFLAP SYS 1 FAULT" RETURNED. AT T.O. +33 MINS AND THEN RETURNED. FLAP OPERATED NOMINALLY ON ARRIVAL - NO ECAM MESSAGE. FLAPS 3 LANDING. MAINTENANCE REMOVED AND REPLACED FLAP 2 PCU VALVE BLOCK IAW 27-54-53 OPS AND LEAK CHECKED GOOD.