Done!https://forum.minetest.net/download/file.php?mode=view&id=9088click the plane to enter.
click or punch to exit, punch to make it able to pick up.
control by keys, like A,D Left,Right...
look up to rise or down.
you can rise or lower in 2 steps, this makes you able to look down a bit without to lower the plane.
this is the basic / working part, if someone want to upload it in a mod topic.
it would be nice if someone want to add model and or animation to it too.