I had my H520 in at KAV for warranty work (no connection between ST16s and aircraft) just when all this crap was going down, well actually it was there from Aug 30 to Oct 14 when it was shipped out, so certainly most of the reason it took so long was probably parts shortage from Yuneec, and then the dispute which I guess had been going for a while but seemed to come to a head about early Oct.
I didn't pick up my package until this past Saturday and did a test flight on my "repaired" H520 today and was happy that the bird flew normally and the camera worked well too, although there still was a problem with the ST16s connecting to the H520. It would not connect after a 5 minute wait and only after I turned the 520 off, then back on would it eventually connect after a very long wait again. After that everything seemed normal, it flew normally and the E90 camera worked fine.
Knowing more now about the dispute between Yuneec and KAV for warranty repairs, and the fact that the silence on both sides was most likely because of lawyers getting involved, I do not blame KAV for ignoring all my calls and emails during the last 2 weeks they had it, as they were under instructions to maintain silence.
What I still would like to know is - what did they find out about the problem? (would not connect to ST16s), how did they fix it? and what parts were changed? I did find out by myself after I got it back, that they changed my E90 camera for a different one as the serial #'s are different.
So, now that it seems that the relationship between Yuneec and KAV may be permanently severed, I will try one more email to KAV to try to get a report on my repair.
Whoever the new repair center is going to be now, I hope the parts shortage from Yuneec is rectified, otherwise it may be deja-vu all over again with the new repair service.