Portal:Transport/Selected anniversaries/September 4
- 1923 – Maiden flight of the first United States airship, the USS Shenandoah.
- 1949 – Maiden flight of the Bristol Brabazon.
- 1957 – The Ford Motor Company introduces the Edsel.
- 1963 – Swissair Flight 306 crashes near Dürrenäsch, Switzerland, killing all on board.
- 1964 – Scotland's Forth Road Bridge, near Edinburgh, officially opens.
- 1971 – A Boeing 727 carrying Alaska Airlines Flight 1866 crashes near Juneau, Alaska, killing all 111 people on board.