I think I would have gone for a wider focal plane. The out of focus speed limit is just too big to not be distracting, I find it hard to focus on the airplane.
The composition doesn't do it for me. The placement of the subjects in the frame is extremely bold, but it doesn't do much for the image. The speed limit sign could be more in focus, and the way it's framed up it splits the image too much. The aircraft is sharp but since it appears next to the sign instead of, say, above it, they feel like two separate images.