What was found
STL - FL 63, EN ROUTE PHL-SFO, RIGHT ENGINE BEGAN LOSING POWER. CREW COULD NOT GET MORE THAN 3000 LB/HR AT FORWARD THROTTLE STOP, OR LESS THAT 1500 LB/HR AT IDLE. FLIGHT DIVERTED TO STL AND LANDED WITH NO FURTHER INCIDENT. ENGINE WAS NOT SHUT DOWN IN FLIGHT. MAINTENANCE FOUND A PIN HOLE IN THE LINE FROM P1 ACCUMULATOR, AND REPLACED THE LINE. (M)