Vehicle gets deleted?

Hayhoo <(-__- >)

So I have this very strange problem that my Vehicle gets deleted after it reaches the ground but not always sometimes it just stays on the ground but not how its supposed to be (see images below)

I have no idea why this is happening. I hope someone can help me °-c°

Sincerely, Knikki

I found the problem after long searching. There were multiple errors but they all had to do with the bone setup of the Vehicle (°-c° d)