It was a calm sunny day in mid-January as Bob climbed into his plane to go for a late afternoon flight over the mountains. He started the engine and it gave a weak squeal as it turned over. Bob thought nothing of this as it happens when it is cold out, but it was more than he could ever know. He taxied his plane to the end of the runway and applied full power. The plane began to accelerate slowly at first but quickly gained speed, and just as fast it leaped into the air. About twenty minutes into the flight the plane gave a shudder as a s ....