Did a meteor bring down Air France 447?
So, in our reference 20-year period we have 720 million hours of flight time, times 125 meteors per hour, times 5.7×10-13 = 0.051, which we can take as the average number of airliners struck by meteors in the period 1989-2009. That’s a one-in-twenty chance of some plane going down for this reason in that 20 year period.
