I'd go with:

The X-15 Story
Bridges at Toko Ri
Strategic Air Command
12 O'Clock High
Wings
Bird of Brey
Waldo Pepper
The Blue Max
Dawn patrol
The Battle of Britain (I almost bought one of the Spits later used in that
film. It was $20,000 in 1968!)

And the first "Airport" where Boing helped them work out the damage from a GA
plane stike. Heston is always good.

The flying in "It's a Mad Mad Mad Mad World" is pretty cool. Who flew that twin
through the billboard? Spectacular!

-- Charlie Springer