looking at the AH in the picture posted I would say that was more like 45 degrees not 80 as the first 3 bars are at ten are degree markings then the next one which is where it looks to be just over is 45 .
Is the horizon not the apparent line that separates earth from sky on your planet Crazybroadsword? Perhaps the aircrafts windscreen centre pillar isn't vertical either
May I suggest that you get a protractor and place it on your monitor
