That's right and I understand that fuel consumption played the key role in the decision for the cancellation. The airlines are looking for ways to cut cost and fuel is a major concern.

I wouldn't be surprised if some airlines ground a few of there fuel guzzling planes in hopes of saving a buck.
The main reason Southwest airlines is doing so well is they only fly one type of airplane (Boeing 737). Every pilot and stewardess they hire can operate all there planes which makes scheduling easy. Makes parts inventory and maintenance a breeze too, compared to servicing 5 different types of planes.

SteveS