What was found
FLIGHT CREW REPORTED THAT SMOKE FILLED THE CABIN APPROXIMATELY 30 MINUTES AFTER TAKEOFF. PILOT PERFORMED CHECKLIST PROCEDURES AND WAS ABLE TO STOP THE SMOKE. AFTER LANDING, THE SOURCE OF THE SMOKE WAS INVESTIGATED AND FOUND TO HAVE ACTUALLY BEEN A FINE MIST OF HYDRAULIC FLUID COMING FROM A CRACKED LANDING GEAR DOWN LINE RUNNING THROUGH THE COCKPIT. THE CREW ALSO NOTED AN ACCUMULATION OF HYDRAULIC FLUID UNDER THE LT RUDDER PEDALS. MX REPLACED THE FAULTY LINE AND OPERATIONALLY CHECKED THE SYSTEM, NOTING NO FURTHER ANOMALIES.