I think there are 3 T67's they use for filming that. Two from one opr and one from another if memory serves me well.
Did you know the Grumman Goose/Mallard, whichever it was, in Fantasy Island was flown by Richard Bach, as in "Jonathon Livingston Seagull"?
As an aside, I also have a book called "Jonathon Livingston Trafalger Square Pigeon". Very odd!