Since I had nothing better to do, I decided I would download this to find anything that's wrong with it and shove it down your throat. Here's what I've got:
-For some reason, the collision noise you've given it makes it sound like you just threw a small plastic object at a wall. The last time I checked, an airliner is not a small plastic object.
-The model is even worse than what is shown in the picture. What is this random segmented area in the back, and why is it larger than the front of the plane?
-Taking off in this thing provides unneeded frustration. When taking off from flat ground, the plane likes to pitch nose-first into the floor.
-I can honestly say that the airliner model was much better than this, although it was bulky, it still looked somewhat like an airplane. This seems more like a bus with cardboard wings.
All in all, I can say that the idea for a jet could be executed much, much better than what you've done here. Put more thought and logic into your addons.