FedEx A310's...were they in storage?

This week, all of a sudden FedEx’s A310’s started appearing over KMCW. Have they been sidelined? Normally, I note everything from soup to nuts in their nightly fleet south, but almost never the 310’s. Now that I think of it, also the 727’s have also started to show up.

Seems kind of an expensive proposition to keep them in reserve instead of short term leased craft.

They’ve had a long life already, so yes most likely on their last days :neutral_face: