41% of pilots get less sleep than they need before duty.

23% of pilots feel their job performance is affected by fatigue.

20% of pilots have made a serious error due to fatigue[1].

Fatigue contributes to as high as 20% of all aviation accidents[2].

References

[1]https://www.sleepfoundation.org/professionals/sleep-americar-polls/2012-sleep-america-poll-transportation-workers-sleep

[2] https://www.eurocockpit.be/pages/fatigue-in-accidents