And the highest altitude that a helicopter has ever flown is 20,000'.
Sorry, this gets off the main topic a bit, but:
Actually, the highest a helicopter has landed in mountaineering (if available, if practically useful)has been
getting higher and higher - over 20,000 ft in 2010. (If Cindy reads this, have they removed that old, heavy, crashed Russian helicopter from the side of the Lukla runway? No way it could ever had gotten that high.)
Helicopter rescue Annapurna The highest a specially modified helicopter (not available in Namche Bazaar, Lukla, or Kathmandhu) has landed (temporarily) was in 2005 on the
summit of Everest.
French helicopter lands on Everest I could go on, sorry I will. World record is over 40, 000, obviously super modified and no payload.
Absolute helicopter altitude record
