In 1984, NASA and the FAA deliberately crashed a remote-piloted Boeing 720 as a test of various safety technologies: https://en.wikipedia.org/wiki/Controlled_Impact_Demonstratio...

In 2012, a team of television studios crashed a Boeing 727 in Mexico (to film footage) because US authorities would not permit the test: https://en.wikipedia.org/wiki/2012_Boeing_727_crash_experime...

So I'm guessing that outside of very specific scenarios, you would have a hard time getting permission to deliberately crash a plane anywhere in the US.