Re: A seaplane Cutlass?
It's done so the actors' mouths are not obscured when they speak.
Think of all the flying movies/shows where the 'hero pilot' *doesn't*
wear their oxygen mask.
Also, all the space movies/shows, I'm especially thinking the original
'Battlestar Galactica', and 'Alien', where the helmets have lights *inside*
them, to illuminate the actors' faces, unless they're the bad guys, in which
case they don't.
Why is Darth Vader so creepy? 'Cos you can't see his face...
Cheers,
Robin.