What was found
AIR INTERRUPT, NO EMER DECLARED, LANDING UNEVENTFUL & ACFT WAS NOT OVERWEIGHT. ECAM MSG, FUEL ACT XFR, FAULT. 1600 POUNDS OF FUEL TRAPPED IN ACT 2. PLACARDED AUTO TRANSFER SYS 2 IAW 28-15B. REPLACED ACTUATOR 2 RELAY 31QH. SYS CHECKED NORMAL.