6th edition had
fc but it would not take a standard F4 (or F2) deck to my knowledge. It may have been in 5th also. It was pretty limited. As I said, I remember one of the arguments for why not UNIX in the EE Dept was the lack of a 'proper' Fortran implementation.
I remember an an early attempt at f2c in those days [which I think came from UMich], but it did not work much better than fc itself as it was a subset language. FYI: f2c was much later (I want to say 82-83ish and post f77). But it was what Ted and I used to start to convert advent to C for the UNIX, so that was pre V7 and must have been 76ish.
Clem