I recently had some images rejected for baddark with similar lighting conditions. If you have the sun shining on one side of the plane, whith possibly the nose a little more lit than the rest of the body on the dark side, you have a problem. Since the sun (in your pictures) is coming from right side of the frame. This will obviously make the left side of the image (right side of the plane) relatively dark. You can try to make the overall brightness higher, but I'm afraid that will cause the nose to be overexposed, giving another rejection. One thing that has worked for me was to manually (using lasso or magic wand in PS
) select the brighter parts, and make them slightly dimmer, or vice versa. Doing this however usually leaves the borders of the selection visible due to the differences in brightness, unless you do it very slightly.
Sorry if this is confusing...I'm quite tired today! I would try just overall brightening the image a bit, but make sure not to get too much white glare off the nose. About the badcentered...probably the fact that only one engine is showing. Did you crop lots from here?
Anyhow, I really like these photos! Hope I helped,
I guess that's what happens in the end, you start thinking about the beginning.