I say yes. It is my understanding that the United States does not have RVSM, they have DRVSM. It is because of the "D" (Domestic) that the requirement for TCAS II does not apply here in the states, but if you were to go to Europe for example, where they have full blown RVSM, it would in fact, be required. Is this accurate or have I misinformed? Please reference a source on the net if posible, so I can collect on my steak dinner. Thanks