If you remember back a year and a half ago or so, US Airways talked about how important 50 and 70 seat regional jets will be to their recovery. In fact, they were going to take several hundred over the next few years to rebuild their business. Well…that’s not going to happen. Embraer and Bombardier have cancelled financing for 100 regional jets because of US Airways’ 2nd bankruptcy, leaving the airline without a key piece of its recovery plan. If US Airways ever emerges from bankruptcy, it will have to shrink significantly. With the closure of the Pittsburgh hub, it’s taken an important first step…let’s see if Charlotte is next.