What was found
AFTER T/O LOST HYDRAULIC FLUID TO STAND PIPE AND PRESS 0, PERFORMED LOSS OF HYDRAULIC FLUID AND PRESS CHECKLIST AND RETURNED TO MIAMI. LANDED IN MIAMI OVERWEIGHT AT 272,600 WITHOUT INCIDENT. FOUND LT MLG BUNGEE CYLINDER PRESSURE LINE LEAKING. REMOVED AND REPLACED LINE IAW MM 20-12-0, SERVICED HYDRAULIC SYSTEM IAW MM 12-30-1. PERFORMED LEAK CHECK IAW MM 29-00 FOUND NORMAL NO LEAK NOTED. ACCOMPLISHED OVERWEIGHT LANDING INSPECTION A-INSPECTION IAW FA DC8 MM J/C 6100, NO DISCREPANCIES NOTED. AIRCRAFT WAS RETURNED TO SERVICE.