airfactsjournal.com

16v4P TIL that Leonardo da Vinci never said "When once you have tasted flight, you will forever walk the earth with your eyes turned skyward. For there you have been, and there you will always long to return." John Secondari, an American TV writer, came up with it for a TV episode about da Vinci in 1965.
ADV7g TIL British Airways used to have a fleet of Chinook Helicopters. One was involved in Europe's most deadly helicopter crash in 1986.