Generally there's "wet" leases (aircraft + at least one crewmember) and "dry" leases (just the aircraft). There are also different certification requirements be

Generally there's "wet" leases (aircraft + at least one crewmember) and "dry" leases (just the aircraft). There are also different certification requirements between the two lease types. [1] I believe as of late Amazon has been dry leasing aircraft and contracting with Air Transport International, Atlas, Sun Country, and others for crew and potentially maintenance as well. [1] https://www.aopa.org/news-and-media/all-news/2020/march/pilot/for-the-record-who-is-in-control https://www.aopa.org/news-and-media/all-news/2020/march/pilo...