I could be thinking of the wrong forum, but I believe that after coming across some discussion on how and where this was filmed, I recently PM'd someone here who claimed to have had a copy of the mentioned documentary.
Well, it seems someone was nice enough to post it on YouTube not long ago. If anyone else wants to watch it, it's available here:
[favour return]Since I'm in an aviation forum...does anyone know when airway names started changing from colour designations, to the current letters?[/favour return]