Days of Future Past Plot Hole and Explanation to a Different Plot Hole?

[Mr. Youtube]

Plot Hole: Why didn't they just have Kitty send Logan back while in the X-Jet? I mean, flying around the world in a jet faster than the Sentinels seems like a pretty good way to avoid getting caught.

Other plot hole: Remember black Trask? Now, I don't really remember but I think Trask's secretary was black... now, lovechild is revealed after the assassination and gets all the benefits? Maybe, yeah...