DVD. Region Free. Air Crash Investigation Season 8 consists of two 'Science of Disaster' special episodes. In each episode we revisit past investigations concerning the role of air traffic controllers in the airline industry and of bad weather in disasters. Each of these special episodes of Air Crash Investigation provides a compelling, in-depth look at these aspects of air safety-every accident offers valuable lessons about air travel, that ultimately make flying safer.. Actors: Stephen Bogaert (Narrator). Director: Ian Robertson. Languages: English. Subtitles: . Running Time: 100 minutes approx. Discs: 1