I think both images have quality issues which will likely receive a rejection.
For example, I would say both are soft. Take a look at a shot of a similar subject, like this one, and check out the difference in the sharpness - particularly apparent around the nose area, the top of the fuselage etc.
thanks...I too think that the first one suffers from some quality issues...I don't know if I can get it any sharper without introducing more grain but I will see what it looks like. Thanks for the comments!