Visible crew/equipment: When Pam chucks the pizza dough at Jan, in the top left hand corner of the screen you can see a crewmember's hand come into view quickly. (01:11:30)
Visible crew/equipment: On the video, in the ice scene just before Deeds pulls Pam from the water, you can see the legs of someone standing in the background that appear quite obvious against the snow and are definitely not tree trunks.
Chosen answer: Helicopter performance is dependent on a number of factors, including air density. As altitude increases, air density decreases and the performance of the helicopter falls as well. At the height of Mt Everest, the air density has fallen to a sufficient degree that most helicopters would be unable to function (few helicopters are capable of functioning above 20,000 feet, nine thousand feet lower than the summit of Everest).
Tailkinker ★