Kay Van Doozer was 36 years old when she applied to fly for the British Air Transport Auxiliary. She held a Commercial license with an instructor's rating and had logged more than 500 hours of flight time. She was an extremely active Ninety-Nine and participated in many air races, both before and after the war. She traveled to England in the fourth group of American women arriving in England in June of 1942. She left her service in the ATA in March of 1944 to return to the United States and become a flight instructor with the WASP.
After being deactivated after the war Van Doozer continued to be active in the Ninety-Nines and the National Aeronautics Association. She was killed in a fire and explosion at her home in California in November of 1949.