X-Plane 9 And 10 Scenery--Byron Airport C83, California (CA), USA. Byron Airport is a county-owned public-use airport located two miles (3 km) south of the central business district of Byron, a community in Contra Costa County, California, United States. On the lee side of the Diablo Range mountains, Byron regularly experiences variable 10-30 knot winds and thermals in the vicinity. Local student pilots often use Byron to practice crosswind landings Requires OpenSceneryX. By Fred Schutzman.