What was found
WHILE ENROUTE TO SAT, CREW REPORTED SMOKE IN THE COCKPIT WITH AN OILY SMELL. THEY SHUT OFF THE BLEED AIR AND PUT ON THEIR OXYGEN MASK. FLIGHT LANDED WITHOUT INCIDENT AT KSAT. SAT MAINTENANCE INSPECTED THE BLEED AIR SYSTEM FOR EVIDENCE OF OIL, NO DEFECTS FOUND. PERFORMED GROUND RUNS AND COULD NOT DUPLICATE THE DISCREPANCY. THE AIRCRAFT HAS BEEN RELEASED FOR AN OPERATIONAL CHECK FLIGHT TO SEE IF THE DISCREPANCY PERSISTS. FOLLOW UP REPORT WILL BE FILED TO THIS SDR REPORT AFTER THE CHECK FLIGHT IS COMPLETED.