At least one of the PBYs that were blown up appears to be a fiberglas copy..the one that explodes as it's being towed across the ramp. You can see a huge crack in the underside of the hull, the engines at just flat faces with props bolted on, and the oil cooler housings are empty.
You're right about the missing glass in the cockpits and goggles for the studio shots..it eliminates the problem of distortion and reflection. Especially important if you're doing "blue screen" shots, where everything blue is replaced with different background footage. (you'll notice in a few cockpit scenes in "Battle of Britain," the background sky can be seen "through" the pilots' google lenses, because the glass was reflecting the blue screen.
I understand when the TTT was first screened, it was much longer. It's been cut down over the years both for subsequent theatrical releases and television. I would love to see the original cut!
The DVD release features one of the original trailers, which includes a shot of an element of "Vals" flying over a parking lot packed with '60s vintage cars..
I've posted this before, but it bears another look. It's an article from a 1969 issue of the Journal of the American Aviation Historical Society that details the creation of the TTT replica aircraft.
SN
