Rube all
Sorry mate, but don't know your name personally?
I have taught Ariel photography for a couple of years.....still no expert, but know some of the "usual problems" that you can come up against.
Looking at your images I am seeing two classic problems.
1. Cheap lens ( chromatic aberrations )
2. Shooting through Perspex glass.
I know we aren't all millionaires when it comes to camera gear, but your lens choice is showing significant fall off in the corners. Secondly - and I may be wrong, but are you trying to shoot through glass ( windows) in the airframe? If so try opening the windows.
Also have you considered a polarizer?