Well, after a walk with my spouse, I've tried to use the airbrush. Again, many water coming with the air of the compressor... Perheaps due to very hot and humid weather here today...
I've also tried the AK Air acrylic paint "Interior Green" from the RAF paint set. Well, not convinced by that first test... First the paint is more darker than the Gunze H312 I use normally; and secondly I've tested the paint "as is", without thinner added because it's said "ready for paintbrush"... And the paint obstructed my airbrush. After having cleaned the airbrush I tried with a little bit of thinner but the paint sounds too dark and I stopped, cleaned the airbrush again and used my usual reference (Gunze H312). Just a little bit bothered by water projections; that asked me a very attentive and skilfull painting stage...