TieuNgao's point is a good one, if you are looking for any real advice. On a sunny day, best to set your ISO to 100 or 200. You can still shoot Shutter-Priority and let the camera pick the aperture. In bright sunshine, that ISO should be enough to do almost everything you want outdoors. The first jet pic was ss 1/1250, ISO 640, and the f-stop was only 6.0, so maybe you needed the higher ISO for that shot.
For slower shutter speeds to get blurry propellers on a sunny day, you have to keep the ISO as low as possible. You could even use a polarizing filter or neutral density filter to reduce the amount of light getting into the camera. Your helicopter was f29. Really high f-stops reduce sharpness, though at 1/125 and a 400mm lens, you're going to lose sharpness anyway from camera shake.
All that said, your pictures looks great! I'm still trying to figure out where you were when you took that first pic.