One thing Mesa has going for it is the PHX operation for US Airways. Since PHX is a big hub for Airways, and since no other regional partner for Airways operates out of PHX right now, I think Airways would have to keep sending flying to Mesa even during a bankruptcy. It would take time for any regional partner to ramp up an operation in PHX to offset the loss of Mesa. RAH doesn't have extra aircraft. TSA and CHQ are very small operations for Airways. Skywest could do it, but not at the drop of a hat. Express jet maybe, but not if they find flying with United or Delta first. I could see PSA actually benefiting from Mesa being cut, and opening up operations in PHX. Or PSA taking over more CLT flying and having RAH head west. Either way, I think PSA stands to gain the most overall.