https://www.psypost.org/2019/01/study-suggests-it-is-common-for-airline-pilots-work-in-spite-feeling-tired-fatigued-or-unfit-to-fly-53047
Steven Tedrahn
flipped into Flying & General Aviation
https://www.psypost.org/2019/01/study-suggests-it-is-common-for-airline-pilots-work-in-spite-feeling-tired-fatigued-or-unfit-to-fly-53047