To start with try to get your facts correct. In my recollection Rhein-Main ( EDAF, located on the other side of Frankfurt Airport) never received F100s. They were restricted to Transport aircraft until the field closed a few years ago.
In the 1960's in EDAF you had DC3 s, DC4s and Globemasters .
The USAF F100 were probably stationed in Spangdalhem, Bitburg possibly Bremgarten, not in Rhein -Main.
All Approaches at that time were either visual ( over the field 2000 Feet on the runway axis , then break begin, middle or end runway , depending on traffic, to join downwind ) or GCA, and they are not so many guys around that still know the old US R/T that goes with it.
If my memory serves me well , the late F100 models ( at least the ones the French Air Force used in late 6os ) had to use braking tail parachute on landing. Special associated R/T to clear the chute from runway also existed at the time.
Anyway good subject to research .
Good luck !