What was found
SHORTLY AFTER TAKEOFF OBSERVED AMBER HYDRAULIC SYSTEM-A LOW QUANTITY CAS MESSAGE, DISCOVER A-SYSTEM DECREASING IN QUANTITY. UNLOADED A-HYDRAULIC PUMP, HYDRAULIC QUANTITY DECREASED TO -0- AND ELECTED TO LAND IMMEDIATELY. DURING DESCENT PTU FAILED, NOTICED STRONG OIL ODOR IN CABIN. ITEM IS UNDER INVESTIGATION.