The remaining 109 CRJs for NW I believe are pretty much locked in under the 10-year service agreement, and it would be difficult for NWA to remove them. The 15 going to Mesaba were covered under a specific portion of the agreement that allowed NWA to move them if a pilots' contract wasn't reached by March 31, 2007, which it wasn't.

The service agreement frees PCL to do the Delta flying, and for any other carrier as well. Although what will happen there is anybody's guess.