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* July 20 – 21 – The Short S. 20 Mercury, flying as a component of the Short Mayo Composite aircraft combination, makes the worlds first commercial heavier-than-air crossing of the North Atlantic Ocean, flying non-stop 4, 667 km ( 2, 900 miles ) from Foynes, Ireland, to Montreal, Quebec, Canada, with a 454-kg ( 1000-lb ) payload.
It then flies on to New York City, covering a total distance of 5, 214 km ( 3, 240 miles ) in 22 hours 31 minutes of flying time.

1.867 seconds.