What was found
PIT - FLT 8054 - INBOUND TO PIT, FROM IAH, SYSTEM A HYDRAULICS FAILED. CREW DECLARED AN EMERGENCY AND HAD TO MANUALLY EXTEND LANDING GEAR. FLIGHT LANDED WITHOUT FURTHER INCIDENT. LANDING GEAR WAS PINNED BEFORE BEING TOWED TO THE GATE. MAINTENANCE FOUND THE RUDDER/ELEVATOR FEEL COMPUTER MANUAL SHUTOFF VALVE LEAKING AT THE LEVER STEM. REMOVED AND REPLACED SHUTOFF VALVE. ALSO, REPLACED CASE DRAIN FILTER AND SYSTEM FILTER. NO METAL FOUND. SERVICED SYSTEM AND OPERATED ALL CONTROLS AND GEAR. OPS CHECKED GOOD. NO LEAKS NOTED. (M)