If AAL had saved their entire 2019 free cash flow (literally impossible), they would still be $6B short of their projected expenses. There is very little of th

If AAL had saved their entire 2019 free cash flow (literally impossible), they would still be $6B short of their projected expenses. There is very little of their cost structure that declines when the planes are parked: Employees need paychecks. Lease payments are due on the engines and airframes. Rent needs to be paid on facilities. The fuel savings from not flying are offset by the need to mothball aircraft.