What was found
FLT 6106 AUA-JFK, CREW DECLARED EMERGENCY DUE TO HYD G RSVR LO LVL ECAM AFTER 3 HOURS FLIGHT TIME. CREW OBSERVED G HYD QUANTITY SLOWLY DIMINISH OVER COURSE OF THE FLIGHT. PERFORMED INSPECTION CHECK OF HYD G SYS IAW AMM 29-00-00-06, COULD NOT FIND ANY INDICATION OF LEAKS. PERFORMED MULTIPLE OPERATIONAL RUNS OF ENGINE DRIVEN PUMP & ELECTRIC HYD PUMP, RESERVOIR QTY REMAINED STABLE & POST INSP LEAK CHECK WAS GOOD WITH NO LEAKS FOUND. OPS CHECK OF SYS IAW AMM 29-11-00-05. A/C OK FOR SVC. SERVICED HYD G IAW AMM 12-12-29.