Thanks everyone. Here is an experiment in shutter speed and prop blur. Shot 1 is with the camera on full auto everything. Nice shot, but the prop stands still. Yuck! Next shot at shutter speed 250, ISO 200. Good, but not there yet. 250 works great for aerial shots, but taxiing requires a bit lower. The next three are sutter speed at 125, ISO 200. Much better. The prop blur gives a much better feeling of motion.