Thank you all.
yes I've noticed the wind generator I'll have to scratch-build. Referring to the FCM sheet, this aircraft had a "U" painted under the underwing, maybe it's the same machine a photo of which exists, flying upside down? I just can't find the pic back, I'll have to dig in the books I have.
My question was about rib tapes. If I got it well, Albatros-built a/c had pink tapes on top and bottom, right?