 As late as 1977 a Lockheed Constellation demonstrated its ability to use the 2700 foot runway of the Greenwood Lake Airport in New Jersey, and in 1946, a lightened Constellation took off from a grass strip in 2000 feet on only three engines.Most general aviation aircraft retain this short-field performance; the Cessna 172, the most produced aircraft in history, will take off in as little as 720 feet when fully loaded.Many small airfields capable of accommodating these types remain in use, mostly in remote areas in the American West and French Alps, where space is limited.