What was found
ON REACHING CRUISE ALTITUDE OF 21,000 FT, WITHIN FIVE MINUTES, RIGHT HYDRAULIC FAIL ANNUNCIATOR ILLUMINATED. OPENED QUICK REF HANDBOOK TO FIND APPLICABLE ITEMS THAT MIGHT HELP ISOLATE AND DETERMINE PROBLEM. DIVERTED. IN 2 MINUTES, HYD PRESSURE WENT TO ZERO. DID NOT DECLARE AN EMERGENCY. MAINTENANCE R & R LT FLAP UP HARD LINE BETWEEN FLAP LOCK OUT VALVE AND FLAP ACTUATOR AND R & R LT AND RT HYD PUMPS OPS AND LEAK CHECKED GOOD.