Full FAA Chronology at this link.
19270329: The Aeronautics Branch issued Aircraft Type Certificate No. 1 to the Buhl Airster C-A3, a three-place open biplane. The plane had an empty weight of 1,686 pounds and its engine had a horsepower rating of 200. By the end of fiscal year 1927, the total of aircraft type certificates issued had reached nine. The rate of type certification then progressively increased. By the end of fiscal year 1928, the total had reached 47; by the end of fiscal 1929, 170; by January 15, 1930, 287.
19460329: Executive Order 9709 authorized the Department of Commerce to take over and operate the 200 air navigation facilities in 68 foreign countries installed during the war for military purposes. This