The FAA generally only has jurisdiction over American airspace, while other countries may be a bit more willing to allow deliberate crashes. In 2012, an experiment that involved deliberately crashing a 727 took place in Mexico, as the FAA was unwilling to grant approval to conduct the experiment, but Mexcian authorities were more tolerant of the idea:

https://en.wikipedia.org/wiki/2012_Boeing_727_crash_experime...