Well, the record is 64 days. They did oil changes inflight on the running engine...

		plantain on Nov 26, 2023 \| parent \| context \| favorite \| on: Aerial refuelling without human intervention Well, the record is 64 days. They did oil changes inflight on the running engine. https://simpleflying.com/robert-timm-john-cook-endurace-reco....