Full FAA Chronology at this link.
19430109: The Lockheed C-69 first flew. After the war, this four-engine, military transport was converted into a successful commercial airliner, the L-049 Constellation. In December 1945, CAA type-certificated the Constellation, which entered commercial passenger service on January 14, 1946, with Pan American. Model L-649, the first version manufactured entirely for civil use, carried 60 passengers and had a range of over 3,000 miles with 8 tons of payload. On November 26, 1968, a Western Air Lines “Connie” completed the type’s last scheduled airline flight in North America.
19470109: Regulations governing the administration of the Federal Airport Act received final approval, and two days later CAA announced the 1947 construction program, listing 800 airports for either construction or improvement.