As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL FLT 1085 AFTER TAKEOFF AND GEAR RETRACTION, CREW REPORTED A SUBSTANTIAL DROP IN THE A-HYDRAULIC SYSTEM QUANTITY. FLIGHT RETURNED TO FIELD AT PHL AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE FOUND THE FLIGHT CONTROL SHUTOFF VALVE MANIFOLD LEAKING NEAR THE A-SYSTEM INLET LINE. REPLACED FLIGHT CONTROL SHUTOFF VALVE ASSEMBLY. LEAK CHECK GOOD. ALSO, REPLACED A-HYDRAULIC SYSTEM QUANTITY INDICATOR. OPERATIONAL CHECK GOOD.