Portal:Transport/Selected anniversaries/July 31

• 1940 – A doodlebug train in Cuyahoga Falls, Ohio collides with a multi-car freight train heading the opposite way, killing 43 people.
• 1951 – Japan Airlines (pictured) is established.
• 1973 – A Delta Air Lines jetliner crashes while landing in fog at Logan Airport, Boston, Massachusetts killing 89.
• 1999 – Discovery Program: NASA intentionally crashes Lunar Prospector the spacecraft into the Moon, thus ending its mission to detect frozen water on the moon's surface.

More events: May 21 – May 22 – May 23