What was found
INBOUND TO VPS, THE AIRCRAFT LOST THE HYDRAULIC FLUID FROM THE RIGHT SYSTEM. CREW FOLLOWED COM PROCEDURES AND WAS ABLE TO LAND WITHOUT FURTHER INCIDENT IN VPS. MAINTENANCE FOUND A PREVIOUSLY INSTALLED TEMP FLEX LINE LEAKING. REPLACED THE FLEX LINE WITH TWO NEW TEMP FLEX LINES. ALSO, REPLACED THE ENGINE DRIVEN AND ELECTIRCAL HYDRAULIC PUMPS AND THEIR FILTERS. NO CONTAMINATION WAS FOUND IN ANY RIGHT SYSTEM HYDRAULIC FILTERS. SYSTEM WAS SERVICED AND LEAK CHECK OK. AIRCRAFT RETURNED TO SERVICE.