What was found
LOSS OF GREEN HYDRAULIC SYSTEM PRESSURE, RESULTING IN EMERGENCY PROCEDURES. EMERGENCY DECLARED AND GEAR WERE EXTENDED AND LOCKED. SMOKE APPEARED IN COCKPIT OF GEAR WAS DOWN AND LOCKED. INSPECTED AIRCRAFT AN FOUND ENGINE DRIVEN PUMP PRESSURE LINE ELBOW FITTING WITH EXCESSIVE CHAFFING, CAUSING A LEAK AND LOSS OF HYDRAULIC FLUID. REMOVED AND REPLACED FITTING AND SERVICED HYDRAULIC SYSTEMS. OPS CHECK NORMAL. INSPECTED AIRCRAFT ENGINE AND DETERMINED THAT THE SMOKE WAS GENERATED FROM THE HYDRAULIC FLUID LEAK BEING INGESTED INTO THE ENGINE INTAKE AND SUBSEQUENTLY INTO THE AIRCRAFT BLEEDS.