What was found
(AIRCRAFT 5652, L/P 1367755) DUE TO ODI INVOLVING LOSS OF LEFT HYDRAULIC SYSTEM FLUID WITH LOWEST REPORTED HYD QTY OF .16. CORRECTIVE ACTION: REMOVED RT MAIN LANDING GEAR TRUCK POS PRESS LINE DUE TO LEAKING AT B-NUT. LINE NIS ATL INSTALLED TEMP LINE PER B757 AMM 20-10. OPS AND LEAK CHECKS GOOD. PER MCC REQUEST FOR ODI PREVENTION PERFORMED STEP 7 B757 AMM 29-11-00-201. PTU PRESSURE AND CASE FILTERS CLEAN W/ NO DEBRI. REINSTALLED ORIG FILTERS REF LOG 6423158 FOR MON LOG FOR TEMP LINE.