I once took a 12 minute nap in twin turboprop, in IMC with no autopilot. I knew it was 12 minutes because I did the math on distance changed vs. ground speed during the time it took to blink my eyes.
Did I mention it was oh dark thirty on a repo leg, about 11 hours into a single pilot freight charter? I was only 56 at the time, but I told Dispatch that I was too old to do any more single pilot trips that had any chance of ending after midnight.
Controlled power naps are a must on the backside of the circadian cycle. Five minutes on oxygen during the descent helps a lot if it's available. This also helps to demonstrate "compliance" with the high altitude oxygen use regulation.
Did I mention it was oh dark thirty on a repo leg, about 11 hours into a single pilot freight charter? I was only 56 at the time, but I told Dispatch that I was too old to do any more single pilot trips that had any chance of ending after midnight.
Controlled power naps are a must on the backside of the circadian cycle. Five minutes on oxygen during the descent helps a lot if it's available. This also helps to demonstrate "compliance" with the high altitude oxygen use regulation.