"The [German pilots'] union said it had carried out a survey of more than 900 pilots in recent weeks, which found that 93% of them admitted to napping during a flight in the past few months."
-The Guardian, "Almost all German pilots admit to napping during flights in union survey"; 2025-09-10
Years as since humans have flown planes stable enough not to need constant attention. On a calm day you don't need autopilot, just set your trims correctly and some airplanes will hold course well enough for a short nap - though of course this is more likely to result in a crash (which likely has happened, though it is hard to guess why a plane crashed beyond pilot error)
months?! :)
"The [German pilots'] union said it had carried out a survey of more than 900 pilots in recent weeks, which found that 93% of them admitted to napping during a flight in the past few months."
-The Guardian, "Almost all German pilots admit to napping during flights in union survey"; 2025-09-10