What was found
LOST ALL HYD G FLUID AFTER GEAR RETRACTION AFTER TAKEOFF. REPLACED LT MAIN GEAR DOWNLOCK ACTUATOR LINES DUE TO OTBD LINE LEAKING, IAW AMM 52-11-22-400-004A. NO LEAKS NOTED. DUE TO LOSS OF GREEN SYS REMOVE AND INSPECTED NR 1 ENGINE CASE DRAIN FILTER. REMOVED AND INSPECTED NR 1 ENGINE CASE DRAIN FILTER, NO DEBRIS OR CONTAMINATION NOTED, REPLACED FILTER IAW AMM 29-11-43-610-010 LEAK CHECKED GOOD. PERFORMED FUNCTIONAL CHECK OF THE LT MLG MAINSTAY ACTUATOR CYLINDER IAW AMM 32-31-00-720-007A, OPS CHECKED NORMAL.