Brian is flying to northern Canada to see his father. The pilot gives Brian the opportunity to see how to fly a plane by giving him a brief lesson. The pilot then has a heart attack and Brian is forced to fly the plane over the Canadian Wilderness. Even though he had been given a brief overview of how to fly the plane Brian is completely unprepared to do so. Unable to contact anyone on the radio Brian does his best to keep the plane in the air until it runs out of gas. The plane sputters and crashes into the water. I believe the only reference to time is that he was flying for several hours.
In Gary Paulson's young reader's book "Hatchet" a young boy, Brian Robeson, is flying to visit his father. He is in a single engine airplane. The pilot suffers a massive heart attack above the Canadian wilderness and Brian is left alone to try and figure out how to fly the plane. The plane lurches because of turbulence and starts to dive its nose downward. Brian knows he has to do something. He calls for help on the radio. For a half an hour he keeps trying to get someone on the radio. He is keeping the plane going but does not know what else to do. Another hour passes and he is still in the air. He repeated radio calls every 10 minutes 17 times.
170 + 60 + 30 = 4 hrs. and 33 minutes(He was in the air)