What was found
SEA - DURING CRUISE OF FLT 516, CREW NOTED RT HYDRAULIC SYSTEM QUANTITY DECREASING AND PRESSURE FLUCTUATING. ACCOMPLISHED QRH PROCEDURE AND QUANTITY STABILIZED AT 4 QUARTS. EXTENDED LANDING GEAR BY ALTERNATE METHOD AND LANDED WITHOUT INCIDENT. FOUND THE RT HYDRAULIC SYSTEM FILTER HOUSING ASSEMBLY LEAKING. REPLACED THE RT HYDRAULIC SYSTEM FILTER HOUSING ASSEMBLY AND PRESSURIZED THE SYSTEM, NO LEAK NOTED. (M)