The United CRJ looks slightly low in the frame to me, and may benefit from a 3:2 crop rather than 4:3 to get rid of the top of the vehicle at the bottom. It may need a touch of CW rotation too.
Both wing shots look generally ok on my screen, although the second is a touch noisy.
The last one look good to me apart from a little bit of noise in the sky, it may be ok though.
Darren
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX
TupolevTu154 From UK - England, joined Aug 2004, 2116 posts, RR: 31 Reply 2, posted (1 year 2 days 23 hours ago) and read 346 times:
I'd say the last one could do with a wider crop at the wing tip, looks a bit close for comfort to me. Apart from that, it looks a bit unlevel (but I haven't used a ruler tool or anything, just looking at it).
As for the crops, I agree with Darren. You need to use 3:2 ratio (1200x800 is an easy way to remember, and what I use).