Thanks everybody and thanks also for the link in the frontpage !
(I was away from Eurobricks since few months)
@Hart New Bob : These engraved tiles came from the store Brick'n'Fig (http://www.bricknfig.fr/)
@LucByard & @Drunknok : the canopy is "re-used" from a design of Nick Trotta because I also love this shape and the assembly of these parts so I wanted to re-use it for technical training but in my case, I made it really functionnal.
@LucByard : A baseline of spaceships with variants... good idea ! why not ! Thanks to the design, it is totally possible ! I'm already imagine a squadron taking off your landpad ! (idea for a common exhibition )