This is tough to catch without some motion blur...I've seen a couple of airplane/helicopter shots so far where the prop was actually stopped with high enough shutter speed. Might take a minor hit on this since the prop is still blurred. Did you bump the color saturation some? The blue looks a little overdone - maybe it's the smoke. Is the smoke supposed to be blue? Speaking of smoke, I'm glad this plane has that going on, otherwise this image might be a little too static/documentary to generate any 'wow' votes.
I like this image, the plane is interesting and the smoke is neat. My negative is I think it's cropped way too close in the front. The plane has nowhere to go. 6
"Great Job" from the "Great Job Baggie"! I originally gave you an 8 on this one, but after second glance, I see qualities that make it even more worthy. First off, the subject matter is very original and different. Not that there aren't other aircraft shots out there in this challenge, but that your aircraft is not a modern one. The colors in this shot are super, especially the yellows. The darker blue body of the aircraft against the blue sky tends to blend in, making the bright colors seem even brighter. The smoke trail really lends a bit of interest to this photo.
The ONLY thing that is distracting to me is the wing in the foreground. It just seems a little blotchy. The other wing does not have that problem, so age of the aircraft is probably not the cause of that blotchiness.