I'm with Andrew Sullivan on this. Here's a Youtube video showing the profound difference between the stories Hillary tells about a Kosovo trip and, well, reality.
My first thought is that this is the result of the all-too-human tendency to believe our own bullshit, and to double-down when caught in a lie. But until someone asks her about it, we won't know if she's thinking of some other trip, or this news coverage is of a different landing, or what. So I'm hoping someone asks her about it.
Update: They did, and she said she "misspoke".