alt Hacker NewsTIL that pilots can't have a full beard because oxygen masks can't make a seal. Guess that's where the pilot moustache stereotype comes from.
TIL that pilots can't have a full beard because oxygen masks can't make a seal. Guess that's where the pilot moustache stereotype comes from.
Good mask fit came up a lot during Covid. Moustaches can interfere too (depending on size, and mask shape)