Definitely an intriguing concept for a brickfilm. I liked the pacing of this trailer, but it took a while before we actually saw something. The first shot was framed nicely, though I feel that showing an in-cockpit shot first would help us know that it's a plane straight away once it goes in to micro-scale.
The shots of the plane in clouds looked great as did the lightning flash. One minor complaint I have is of the button press animation. It appears as if you only have one frame of the button in the down position which goes by very fast. Keeping the button down in another frame or two would improve this technique if you tried it again.
I look forward to seeing the finished film as I haven't seen a plane thriller brickfilm before and it looks like you have good potential here.