Put otherwise, in, let's say a reasonably active 50 year career of flying and driving, I'll at the end have had an overal risk of about 1 in 34 of being killed in or by a car, about 1 in 35 of being killed in an aeroplane, and about 1 in 17 of being killed in a microlight. This adds up to about a 1 in 8½ chance of failing to reach 70 due to one or t'other.
Being a bit pedantic your chances are slightly better than that, because your risks of dying are not independent probablilities - only one of the three can actually get you - so you cannot just add them up. You need to work out the chance of exactly one of the three getting you
I reckon about 1 in 10 - 11 or so, but a nice bottle of Gevrey-Chambertain at lunchtime means I can't be faffed working it out...
