What was found
AIRCRAFT NOT GROUNDED - RIGHT WING OUTER TANK LEAKING FUEL INTO INNER TANK. MEL 28-02C RH INTRCELL XFR VLV, AUTHORIZED 04AUG2020T1513Z. CREW REPORTED TRANSFER VALVES CLOSED ON ECAM FUEL PAGE. PERFORMED AMM TASK 28-15-00-740-002-A FUNCTIONAL TEST OF THE INTERCELL TRANSFER VALVES, OPERATIONAL CHECK GOOD. REMOVED & REPLACED RIGHT WING SPILL PIPE CHECK VALVE AT RIB 15 PER AMM 28-25-47. REMOVED & REPLACED RIGHT WING FUEL PUMP CHECK VALVE (2 EA.) PER AMM 28-21-43. REMOVED & REPLACED RIGHT WING REFUEL VALVE 8QU PER AMM 25-25-51, LEAK AND OPS CHECK GOOD.