Is it possible to give flyers skeletons?
I started rigging the basilisk with a chain skeleton, but is it possible to give vehicles bones (with root and eff), not only nulls?

Yes

animation_guide.doc wrote:Bones can be Skeleton 2D/3D chain bones or nulls. (Bones can be geometry as well but shouldn"t be used in the mesh.)

2D chains and nulls would be your best options, you would rarely ever need to use 3D chains, they're used more for example a dog's tail wagging, I would also avoid using geometry as bones if at all possible.

I think flyers only support takeoff and 9pose animations though.

ah thanks, i wanted to make the sceleton with chains cause the basilisk has/is a kind of dogtail
takeoff is enough, but does flyers support 9pose?

DarthD.U.C.K. wrote:...does flyers support 9pose?

Yes, for an example have a look at:
\BF2_ModTools\assets\sides\all\odf\all_fly_snowspeeder.odf
it is defined as:
FinAnimation = "all_snowspeeder_9pose"