There is a fuel drain button, it's just slow. Google "fuel jettison". Sometimes you have to make an emergency descent and the plane is too heavy (or too dangero

There is a fuel drain button, it's just slow. Google "fuel jettison". Sometimes you have to make an emergency descent and the plane is too heavy (or too dangerous to carry so much fuel). From the ground it would look like "chemtrails". You can look up videos of this on YouTube.