I have been without my Mavic Air drone for over a week while it was being repaired.  For some reason, the internal fan stopped working causing the unit to overheat.  Fortunately, the failure was covered under warranty and the manufacturer chose to replace the entire unit.  When I returned from work it was waiting for me so I did a quick flight over the house to test it out before the sun was gone. Props to the drone maker, DJI, for prompt and hassle-free service.