Originally Posted by 727C47

Actually in the DC3 days when these regs were written ,some local service lines were flying 8-9 legs a day,(aka old Frontier,Allegheny ,etc.),they hand flew in atrocious weather,and the old AN low frequency aural null approach and nav system got you down to 300 and 1,at EWR,and other stations.One of my old mentors told me during WW2 ,they would fly the old C47s under the hood till touchdown in training. No weather radar,tailwheel ops,round engine vibration ,and noise, multi leg days, I think they were well acquainted with fatigue.