A blonde was taking private pilot lessons. It was time for her to take her test.

The instructor told her to go up 500 feet and radio back. Then he instructed her to go up to 1000 feet and radio back. Again, he instructed her to go up to 2000 feet and radio back, to 3000 and radio back, and so on. She took the helicopter up to 500 feet and radioed back. She was doing well, so she went on up to 1000 feet and radioed back. Still doing well, she went on up to 2000 feet, 3000…

At this, she crashed in the field. The instructor ran to her and asked what happened. The blonde answered,

“When I got to 3000 feet, I got so cold and I turned off the big fan.”