You get a useful panic stabilization button to quickly level the plane when you need it. (geekwrapped.com)
It has a panic button that auto - levels the plane when needed. (geekwrapped.com)
Additionally, the weapon seems to need targets to be on the same level plane to hit, because apparently, David can not adjust his aim up or down, even if an enemy is a couple of steps below on a staircase or higher on a ramp. (glitchcat.com)