[HPsquared]

I think it's "passenger fatalities per passenger-journey". So need to multiply the number of flights by the crew on each.

[ddeck]

Right you are, which brings us back to the ~1.7% number (actually 1.6% if you include the STS-135 mission, which Wikipedia doesn't for unknown reasons).

So a 1 in ~60 chance of dying on any given flight...have to agree that that is far from safe.