What was found
AFTER 1 HOUR OF FLIGHT, LOST ALL RIGHT HYD QUANTITY. SECURED RIGHT DEMAND HYD PUMP. REMOVED AND REPLACED RH HYDRAULIC ENGINE DRIVEN PUMP IN REFERENCE TO AMM 29-11- 05-4-4, ALSO INSPECTED AND REPLACED RH HYDRAULIC CASE DRAIN, PRESSURE, AND RETURN FILTERS IN REFERENCE TO AMM 29-11-17-4. NO LEAKS NOTED. A/C IS OK FOR SERVICE.