What was found
GUM - FLT 0957 - L/P 41880812/7943851 - AFTER TAKEOFF FROM PNI WITH GEAR HANDLE IN UP POSITION, LOST ALL A-SYSTEM FLUID. UPON LANDING IN GUM, MAINTENANCE FOUND NR 1 ENGINE HYDRAULIC PUMP FAILED INTERNALLY 'LEAKING OUT OF SUMP'. ALSO, FOUND LOTS OF METAL IN THE CASE DRAIN FILTERS AND BURNED HYDRAULIC FLUID. ON L/P 7943851, MAINTENANCE REMOVED AND REPLACED NR 1 AND NR 2 ENGINE DRIVEN HYDRAULIC PUMPS PER MM 29-11-31, AND REPLACED CASE DRAIN FILTERS PER MM 29-11-41. SYSTEM FLUSHED OF CONTAMINATES AND BLED A-SYSTEM. RAN ENGINE NR 1 AND NR 2, FOUND NO LEAKS ON THE HYDRAULIC PUMPS AND OPS CHECK GOOD. AIRCRAFT RELEASED FOR SERVICE. (X)