Originally Posted by
rickair7777
...No duchesses have ever crashed?
A query of the NTSB data base shows 4 were lost out of 437 that were manufactured. It does not show up on my chart for some reason although it would show 0.9%.
Originally Posted by
wizepilot
The C-320 was basically a longer version of the 310. But there was a hell of a lot less manufactured than the 310. So I think those numbers, as discussed, may be a bit slewed...
CE-310: 6321 made, 346 crashed => 5.5% lost
CE-320: 580 made, 73 crashed => 12.6% lost
Again, a more meaningful understanding could be had from a study of fatal hull losses per operating hour, if only the data were available.
My reading in the subject tells me regardless of model, the highest loss rate in light twins occurs when a design has poor single engine climb performance. Any airplane that has poor SE climb performance is likely to lead to a fatal crash when the critical engine fails. This is especially true of twins that are both underpowered and use non-counter rotating props.