Imperial and Metric, and the perils of confusing the two… it can cause more than irritating pileups, CK!

Canada had another famous "dead stick" landing, in 1983, when an Air Canada plane ran out of fuel because refuelers had confused metric and imperial measures when loading the plane. The pilot, who had extensive glider experience, landed the Boeing 767 on a disused airfield used for auto racing and go-kart derbies in Gimli, Manitoba. That plane has become known as the Gimli Glider.

http://www.nytimes.com/2001/09/10/international/americas/10PLAN.html?todaysheadlines