PanInternational 1-11 at Hamburg had part fuel and part water in the water tank. A third party organisation had serviced the water tank from barrels, at least one of which contained drained fuel that was not labeled.
On take off the water at the bottom of the tank flowed as normal until just as they rotated the fuel was reached. Both engines had massive overtemp and failed.
The aircraft landed on an autobahn but hit a bridge. 22 people died.
6 September 1971