Keystone Aerial Surveys, Inc. specializes in providing quality airborne surveys. Keystone has flown millions of survey miles throughout the United States. With four locations: Philadelphia, PA (headquarters), Tyler, TX, Tucson, AZ and Los Angeles, CA, the Flight Department has considerable experience collecting airborne imagery at high and low altitudes from many sensor types: digital, film and LiDAR (including its new Galaxy).
Keystone operates a large fleet of aircraft (currently 21), metric film camera systems, a suite of large format digital sensors (currently 8) and multiple Optech LiDAR systems. Keystone also has a fleet of UAS for use in mapping, engineering and inspection.