Thanks for the clarification on the 717 schedule, knope. When I last looked several weeks ago routes like DFW and DEN still had mainline flights. With those now gone and no new additions elsewhere, I assumed there was 717 lift available.

As for the DCA flight, I found the petition after my original post. Earlier this week I heard YX had applied for more DCA slots and assumed (wrongly) that it would be for a new MCI flight.