Full FAA Chronology at this link.
19330208: The Boeing 247 first flew. Often considered the first modern airliner, this single-wing airplane of all-metal construction was powered by two Pratt & Whitney Wasp air-cooled radial engines. It had a gross takeoff weight of 12,650 pounds and accommodated 10 passengers. The Aeronautics Branch type-certificated the plane on March 16, 1933, and it entered scheduled airline service on March 30, 1933.
19590208: FAA announced plans to coordinate Federal research and development in aviation weather forecasting and reporting. The announcement followed general agreement between FAA, the Department of Commerce (Weather Bureau), and Department of Defense on the need for such a joint research program.
19850208: FAA established a policy that the Precision Approach Path Indicator (PAPI) would be the standard visual glideslope indicator for new, Federally-funded installations at fixed-wing airports.