Pretty much every day for a year or more doing mineral exploration work in Australia.
Our pilot had just come off a contract in Papua New Guinea landing below the jungle canopy so our desert job was like a vacation for him.
Unbeatable for getting to places with no or crappy roads. We drove 6 1/2 hours one time averaging 15 mph because of rivers every 100 yards or so to get a particular site. A few days later the chopper arrived in camp so we flew back to the same site...it took about 4 minutes in the chopper
