Now that I have a 450D, hopefully the quality should improve somewhat.
Will post some more up when I get a chance!
your shots were fine except for one thing, sun was a big issue.
i noticed that alot of your shots the subject was dark because you were shooting towards the sun.
It looks like the camera settings picked up the dark side of the plane and slowed down the shutterspeed.
We have the same problem in sydney, if you are facing west in the afternoon, all you will get is sun and dark aircraft.
i have a 450D as well. you will get some fantastic shots from it, play around with it, it’s a great camera, just watch out where the sun is in relation to where you are taking the shots.
my Fav photo, the EK A380 with the BA tails in the foreground, BLOODY GREAT PIC !