What was found
PASSING THRU 15,000 FT ON CLIMBOUT RECEIVED A YELLOW SYS LO PR ECAM INDICATIONL THE YELLOW SYS QUANITY DROPPED TO APPROX THE RED DOT IN THE YELLOW ARC. WE COMPLIED WITH ALL ECAM AND QRH PROCEDURES AN DECIDED UPON A DEVERSION TO KMEM. WHILE DEBREIFING CREW I ASKED IF AN EMERGENCY WAS DECLARED BECAUSE THE FIRE DEPT WAS THERE AND THEY SAID YES. DUPLICATE SDR REF #30-1930 OPERATED YELLOW HYDRAULIC SYSTEM, FOUND L/H #5 SPOILER SERVO VALVE LEAKING FROM MISSING O-RING. REMOVED AND REPLACED L/H #5 SPOILER SERVO VALVE 69CP REF. A300-600 AMM 27-64-12-04. LEAK CHECK GOOD. OPERATED #5 SPOLIER WITH TEST CONTROL BOX PN98A27608011000 MULTIPLE TIMES, NO LEAKS. SERVICED YELLOW HYDRAULIC SYSTEM TO NORMAL OPERATING LEVELS REF. A300-600 AMM 12-12-29-00.