On May 14th, 2005 at 7h08 (local time), a serial Ecureuil/AStar AS350 B3 piloted by the Airbus Helicopters X-test pilot Didier Delsalle, landed at 8,850 meters (29,035ft) on the top of the Mount Everest (Kingdom of Nepal). It is also a world altitude takeoff record. It has been validated by the World Air Sports Federation. https://www.fai.org/record/didier-delsalle-fra-11596 https://www.fai.org/record/didier-delsalle-fra-11597 More about this story: http://www.mounteverest.net/story/MysteryChopperlandsontopofEverestMay242005.shtml https://www.verticalmag.com/features/landing-everest-didier-delsalle-recalls-record-flight/