There's probably an obvious answer to this, but I'll ask anyway. Why do Virgin lease two aircraft from Air Atlanta for Manchester-Orlando when they would appear to have aircraft of a similar vintage in storage in Mojave?
I would assume that the bean counters had assed that it is cheaper to have a lease company supplying tyhe aircraft and crew than get one of your own aircraft from the desert, refit it to acceptable standard and then employ crew.
it might also be some sort of tax advantage ?