An interesting point is that Rippert is former employee of ZDF. A sports reporter, if I am not mistaken.
Don´t give up Nick. You might remember my suggestion about communication with media.
Czech TV Nova made also a documentary about St. Exupery case. Not a single word of doubts related to ULTRA documents. BTW the Nova reporter was aware of my artical based on your research. But he did not use it

His name is Motl and he made some interesting documents about ghosts and similar mysterious topics. But he also tries to find out living Nazi-criminals.
Back to St-Exupéry- I always doubt about my research and there is one interesting point. Nova documentary mentioned that Luc Vanrell posses an American document with radio interception confirming Ripperts claim communicated via radio. This would be first solid documentary evidence that there was some dogfight on July 31, 1944 over Southern France.
However, when going through Pradel/Vanrell book I did not have this impression, because .... 1) such document is not shown in the book (just a recent letter from Rippert confirming that he shot down a P-38 on July 31, 1944) .... 2) looks like all what is said about American intelligence is this (p. 181): "
Rippert annonce sa victoire (as said to authors by Rippert)
. Les Américains auraient cette communication radio. Le sergent-chef Jacquemont, mécanicien photographe du II/33, apprend de deux officiers américains et note dans son carnet que la perte du F-5B 223 serait due á des chasseurs allemands et qu´il aurait disparu en mer."
If I failed to notice more reference to the American document in the book - my apology and I would be honestly interested to learn more about it.
If anyone would have an idea how to contact Mr. Vanrell, I would be grateful as well.