What was found
LAS - DIVERSION - FLT 0765 - APPROXIMATELY 20 MINUTES OUT OF PHX EN ROUTE TO SMF NOTICED HYDRAULIC FLUID LEAKING FROM THE TOP OF LEFT WING, ALSO OBSERVED B-SYSTEM HYDRAULIC QUANTITY DECREASING, FLUID LEVEL STABILIZED AT 1/2 QUANTITY ON INDICATOR, DIVERTED INTO LAS FOR REPAIR. MAINTENANCE FOUND LEAK COMING FROM FITTING AT NR 3 SPOILER, REPLACED 2 EACH O-RING SEALS ON FITTING FOR NR 3 SPOILER, LEAK CHECK WAS GOOD.