Pilot should use oxygen that high, jumpers will just get dozy.
Oh! wait, they have to be on the ball to pull deployment cords and maneuver. :-o)
Every person should test their blood oxygen at altitude to see if there lungs are functioning well, before spending time at altitude while needing to be alert. Small airplane pilots have been surprised at deterioration of their body with aging/health problems. (Cheap ones readily available, Nonin is the class one but can be hard to find as distributors are bureaucracies, AeroMedix sells a clip-on-finger one, Nonin also makes a recording one with low-profile sensor and wrist recorder.
(Accident over eastern BC, airplane had temporary oxygen system while regular one was being fixed, experienced pilot had to take mask off temporarily to use radio, probably forgot to put it back on, IIRC was flying at 15,000 feet ASL to clear huge rocks sticking up.)
Do airliner pilots test regularly? Should be done by doctor on periodic review.
Last edited by RationalKeith; 8th Nov 2021 at 16:02.