Cook Aerial Applicating is a one man, one aircraft, aerial spraying business started in 1976 with the purchase of an open cockpit 1941 Boeing A-75 "Stearman" biplane that had been converted for use as an ag-aircraft for the dispensing of dry as well as liquid chemicals on farm crops.

Progressed to an airconditioned 1981 Airtractor model 301A  equipped for  liquid chemical dispensing.  It has swath guidance provided by a computer that gathers information from global positioning satellites and displaying the appropriate information to the pilot via an externally mounted  lightbar and a display on the insturment panel in the aircraft and flow control for applying the proper rate of spray based on ground speed detected by GPS.