| Term | Definition |
| Federal Aviation Act- Year | 1958 |
| Airline Deregulation Act- Year | 1978 |
| Kelly Act- Year | 1925 |
| Air Commerce Act- Year | 1926 |
| DOT & NTSB established by Johnson | 1966 |
| Agency changed to Administration by Johnson | 1966 |
| Accident investigation transferred to NTSB by Johnson | 1966 |
| Airport & Airway Development Act- Year | 1970 |
| Reorganization Act- Year | 1940 |
| NTSB separated from DOT | 1974 |
| airways & radiocoms transferred to authority of DOC | 1927 |
| Airmail born | September 23, 1911 |
| Civil Aeronautics Act- Year | 1938 |
| Black-McKeller Act- Year | 1934 |
| McNary-Watres Act- Year | 1930 |
| Federal Airport Act- Year | 1946 |
| Official airmail flight | May 15, 1918 |