Still oversharpened, but looking better than the ones you showed in an earlier post so you are getting better with your processing.
The common rejection is exactly that, unfortunately. With so many good quality shots in the database, the bar gets raised on some individual airframes. It gives you an added idea of how much you would need to improve the shot to get it accepted. If I get a common, I usually don't try to re-work the shot, I consider it a hint from the screeners that I need to radically overhaul the quality to get it accepted, somethng which probably is not possible. The 'standard side-on airliner departure shot', though a classic, is quite subject to common. You can get round it by shooting other, less common, aircraft subjects (GA or mil, but pointless if only airliners float your boat) or changing the motive (not always easy at large airports where opportunities are limited). Here is a good example of a better motive than the usually side-on:
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Photo © Hongyin Huo
If you can find the right place to stand (safety and security considered) and can take normal side-ons you should be able to take shots like this as well, which have a much improved appeal and are less likely to fall foul of common (maybe).
It may help people to help you if you can give us access to the original shot, fresh out of the camera. There are enough people here to be able to tell if the shot is editable to Airliners.net standards (in which case advice can be given on your workflow) or if the underlying problems lie with the original image (in which case editing may never be able to bring the image up to the required level and it is time to move on to another shot).
Don't give up (if you are tired of working on these particular images, try some new ones). I think we all went through the same frustrations during our time. Keep plugging away, revising your techniques (maybe upgrading camera or lens if necessary) and learning. Your image already looks better than last week but there is still a little further to go.