Welp its another 0.29 bug, I'm sry Mitch.
Problem:
When air spawning Tarantulas in the mission editor with an initial speed, the wings are in the vertical position and cannot swivel fast enough.
This means that both ai and human pilots ends up loosing control of the airframe (altho I'm sure some talented pilot is gonna somehow prove me wrong)
Solution
Simply make taras spawn in with wings in the horizontal position when they are given an initial speed in the mission editor tab. Or a better option would be to be able to control the wing position prior in the mission editor tab, this could apply to the medusa as well.