4% air taxi. 142 aircraft were then based at this airport — 95% single-engine, 4% multi-engine and 1% helicopter. References External links Official site Aerial photo as of 16 August 1998 from United States Geological Survey The National Map airfest.wixsite.com/airfest — Grass Valley Airshow and Brewfest Airports in Nevada County, California Airports established in 1933 1933 establishments in California