In terms of screen time, about 50 per cent of the film is...

In terms of screen time, about 50 per cent of the film is reconstruction, based largely on those phone calls. There are some dialogue scenes on the plane, and 90 per cent of these are based on tape evidence and the memories of people who spoke to passengers on the flight. There are a very few occasions where we have invented dialogue and it was based on consultation with people who knew the passengers.