After Ryan and Calleigh find the dead girl with one blue eye and one green eye, Ryan reveals this is due to her wearing one blue contact lens and takes the contact out. However, in the next shot of the victim, she still has a green eye and a blue eye, despite the fact that she no longer has her blue contact lens in.
When the plane first flies over its horizontal fin is on the top of the vertical fin. When it crashes however, and further in the episode, the horizontal tail is on the lower section of the vertical fin.