What is it about high altitudes that makes it hard for helicopters to fly?

Subject: What is it about high altitudes that makes it hard for helicopters to fly?

Date: Wed Jul 14 23:56:40 1999
Posted by Annmarie
Grade level: grad (non-science) School: No school entered.
City: Hillsboro State/Province: OR Country: USA
Area of science: Earth Sciences
ID: 932014600.Es

Message:


In the movie Everest, they said that helicopter rescue is 
impossible for lost climbers because the air in too thin. I 
don't understand what is missing in the air.  I know that oxgen 
is lacking but what else?

Re: What is it about high altitudes that makes it hard for helicopters to fly?

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