[Langdon]

Dan-San this is ridiculous, you selectively quote to suit your theory. Worse still you mis-quote to give your theories credence.

Your quote from Imrie's book (and even this is not a direct one):

"Therefore, some time after Richthofen's last victory on 18 Maqrch 1918 and doubtless intended for further use in an all-red scheme as Richthofen regular aircraft."

The real quote in context without modification.

It is not known when this aircraft, apparently 152/17 and completely over-painted red, was given to the museum by Kogenluft, but the machine's national insignia display and manner of painting indicate that they were contemporary and not applied retrospectively.
Therefore, some time after Richthofen's last victory on this machine on 18 March 1918, it was painted red and was doubtless intended for further use in its (not an) all-red scheme as Richthofen's regular aircraft. It may not have been a coincidence that the last combat report referring to this aeroplane with its partial red markings was only a few days before the beginning of the March Offensive. This gives some credence to the war correspondents' statements already mentioned, and the aircraft could have been completely over-painted red by the 21 March 1918. Furthermore, in the early 1930s Zeughaus officials categorically stated that the all-red aircraft in their charge was Richthofen's personal aircraft before it was replaced with the triplane in which he was killed.

Look at the other quotes from Imrie's book that I have bought to your attention which make it quite clear what his research indicates. He also states that in its final form with the thick ratio Balken Cross it was obvious that the aircraft had not been in use right up to his death. Do you really think that MvR had only one triplane at his disposal at LeChelle? These aircraft were only used for twenty hours between engine overhaul!

H.J. Nowarra made a very valuable contribution to historic research with his collecting of photos but I think its widely considered that his research was from an early period that has evolved since then and is now far more accurate.

I asked you two questions which you dodged once again. On what date was 152/17 sent to Berlin?

If you do not consider the translations of the MvR combat documents to be an accurate reflection of the original then you must have conducted your own translation to prove this, what is your translation on the colour schemes of his Dr.I aircraft?

So far it seems your research into when aircraft entered and were removed from service is entirely based on documents you believe are false.