Total block hours for Republic and Shuttle are down 1,122 hours for May. So not much change. Block hours have continuously decreased (with few exceptions) over the last 18 months. Most of the 170s I have seen are still flying in DCA and LGA, so I think that those will be parked next month because they have 0 hours of block scheduled, and they will be bringing out the parked 175s that are sitting at various airports (CMH, IND, PIT, etc.).