At approximately 15:20 MST, a Bellanca 17-30 disappeared from radar near Creede. The pilot and his passenger are presumed dead. The meteorological conditions are unknown. The flight originated from Colorado Springs about 50 minutes earlier, but no flight plan was filed. Family members said the flight was headed to Las Vegas. The last radar contact of what is believed to be the missing airplane showed an altitude of 14,700 feet msl. It has not been determined if the airplane was equipped with supplemental oxygen.