While an uncommanded deployment would likely be a 10^-9 occurrence,
A little too genererous estimated above
With WOW and only two barriers the historical data would suggest something more like 10^-7 but coupled with some redundancy in the aircraft a catatrasphic result would be more like 10^-8
and some would even challenge that a third barrier could meet that 10E-9
With WOW and only two barriers the historical data would suggest something more like 10^-7 but coupled with some redundancy in the aircraft a catatrosphic result would be more like 10^-8 (
WOW switch is third barrier)
Of course in this case no catastrophe resulted