Full FAA Chronology at this link.
19300116: Frank Whittle, a British Royal Air Force officer and engineer, received a patent for his design of a turbojet aircraft engine. Manufacture of an experimental version of the engine began in 1936. On May 15, 1941, the Gloster E28/39, a British turbojet powered by a Whittle W/X jet engine, made its first official flight, at Cranwell, England. However, this first Allied jet flight came nearly two years after Germany had accomplished the feat. On August 27, 1939, the first air-breathing jet flight of an aircraft had occurred, accomplished by a German Heinkel He 178 aircraft with a jet engine by designed by Hans von Ohain.
19480116: The Airport Operators Council was established as an association of operators of U.S. commercial airports. In 1967, the association added the word “International” to its name to reflect a broadened membership.