Helicopter Pilot

An Antartian wanting to learn how to fly a plane signs up at a small airport and was told they only equipment available is a helicopter. The Antartian thinks for a moment and says, "That’s fine, I'll just learn how to pilot a helicopter." After some ground instructions the day of the solo comes and the Antartian is at the commands of the helicopter. He goes up 1000 feet with no problem, climbs to 2000 and the instructor asks “ Is everything o.k.” The Antartian responds; “yes everything is going well.” The instructor is very happy to have such a great student and decides to give him the last test, so he orders the Antartian to climb to 3500 feet, make a turn and land. The instructor goes out to see the landing when suddenly he sees the helicopter falling down. Luckily after all that the student pilot was alive, and the instructor asked him, “ what happened when everything was going so well? The pilot replied: "It was getting cold so I turned the outside fan off."