Originally Posted by
halls120
Well, I know of at least one airline that does have pilots "sitting around all day and night" - Delta. My brother is a DL 767/757 captain, and in the winter when schedules aren't so tight, he typically spends part of his monthly duty sitting in a hotel near LAX on reserve. When a captain is ill, or stuck somewhere else with a broken plane, my brother gets the call and he reports for duty.
All airlines have crew members on reserve. The question is how many, in the case of pilots which equipment they fly, and in the case of our beloved company, whether they're pmCO or pmUA.