Mamba

For Captain Steven Custer, it's just another boring nonstop flight from San Francisco to London. He is totally unaware his life is about to change forever. Forty-thousand feet over Canada's Northwest Territory, he's contacted by the FBI and told that terrorists have planted a deadly snake on his plane. Moments later, he loses all radio and navigational aids. Now, having no contact with Earth, he and his crew must destroy the terrifying menace or they and the planeload of passengers will perish.