Hello,
Based on the ULTRA reports that you provided I did a further search for information and ended up with more questions than answers:
1) Remi you stated "Ausb. III./KG51": based on the scan of the corresponding ULTRA report that Nick posted, I don't see the reason why you think it was the Ausb.(ildung) Staffel. That leads me to the 2) question:
2) In the ULTRA report, what does KADOP and R/T Staffel mean? R/T is probably radio telegraphy? Was the (Night) III./KG 51 the Ergänzungsstaffel(Nacht)/SKG 10 (see also question 5)?
3) Nick, would it be possible to post a scan of the first ULTRA report that mentioned W.Nr. 160986? Does this report specifically say Erst. SKG 10?
4) I tried to find the Ergänzungsstaffel SKG 10 at
www.ww2.dk and found two different units with overlapping time (does this make sense?):
http://www.ww2.dk/oob/bestand/schlacht/bergskg10.html
5) Is Ausb.III./KG 51 and Ergänzungsstaffel(Nacht)/SKG 10 one and the same unit? If so, it is interesting to note that in October 1944 4 Fw 190 G-3 left the unit. They are indicated as 'moved to other units'. Hence, W.Nr. 160896 was not damaged or destroyed but went to another unit (would be interesting to know to which one

Does somebody know what the source for the Bestandesmeldungen at
www.ww2.dk are and how reliable they are?
Regards,
Roger