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
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.
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX