How to get good mesh update using a multi-body skeletalmesh?

Hello Everyone, I’m actually making a flight simulator with Unreal Engine 4.12 and i have a problem.

I’m using a 3d model of Airbus A380 which I’ve made in 3DS MAX 2016. I separated every parts and used hierarchical system to get every parts parented to the root body but when I’m trying to use it as a skeletal mesh, my root body is working good instead of all others parts which are going strangely when I’m moving my SkeletalMesh. Here are the screenshots :

132462-bugskeletalmeshupdate.png

132463-skeletalmeshhierarchy.png

So, how can i do to have my Airplane (SkeletalMesh) working good without this bug when updating all bones ?

Thanks in Advance for help.

Because nobody wants to help me, I mark this question as anwsered.