Why? It's not that NASA hates airplanes. Like the two tests earlier in July, NASA is looking at how an emergency transmission system holds up to rough impacts. The first crash simulation a low-level nose-first collision onto concrete, where the plane skidded on the surface. The second test was a nose-first dive into dirt, which just absorbed the plane's impact and led to a definitely harmful and quite possibly lethal crumpling of the craft. This test was a tail-first crash into soil, which flipped the plane but didn't crush it in on its crash-test-dummy occupants so much.