Hello Chris - how are you keeping?
There seem to be a lot of people saying that they are having more rejections lately, so you are definitely not on your own.
As for these shots - I am not surprised to see the rejections, in all honesty. The first shot, though atmospheric, does suffer with the lights looking very blurry. My guess is that for a shot like this to have a chance those lights have to be sparkly and sharp. But even with that the plane itself is almost lost in the dark of the sky, so it would struggle not to be 'dark'.
The second shot of the contrail looks dark to me. It seems these kind of shots are very difficult to nail, and the plane itself has a lot of contrast, with much being in shadow, but with that bright highlight on the left.
The third Singapore shot looks like it has a hefty dose of Neat Image - the left wing looks particularly dodgy. The shot looks like it has potential, but that grain and Neat Image effect (or whatever it is) are the key quality problems, together with a lack of sharpness.
For the AA
shot in the second post - once again I think the screeners were right. This looks like a situation I have found myself in many a time - an attempt to get a closer crop, but the original has just a tiny bit of blur. Thus, no amount of attempts in editing to sharpen it up will work. I am afraid to say that I think the most recent attempt will also fall foul of the screeners and they will reject that too - sorry.
If you think I can be of any help don't hesitate to get in touch.
All the best.