What was found
JFK INFLIGHT T1015/30 RIGHT SYSTEM HYDRAULIC QUANTITY EICAS STATUS PAGE INDICATED .42 QUANTITY. RETURNED TO JFK AND LANDED OVERWEIGHT WITHOUT INCIDENT. ACCOMPLISHED OVERWEIGHT INSPECTION WITH NO DAMAGE NOTED. SERVICED RIGHT HYDRAULIC SYSTEM TO FULL. SYSTEM GROUND CHECKED NORMAL OPERATION. REPLACED RIGHT HAND ANTI SKID SHUTTLE VALVE MODULE AND ALTERNATE BRAKE SELECTOR VALVE. JACKED AIRCRAFT AND CHECKED ALL BRAKES FOR PROPER RELEASE. SYSTEM GROUND CHECKED NORMAL OPERATION. (CLOSED) PROPER RELEASE.