Multi engined propped aircrafts are notoriously hard to insure because of these characteristics (and not unrelated, why you can pick up a twin-engine Beechcraft

Multi engined propped aircrafts are notoriously hard to insure because of these characteristics (and not unrelated, why you can pick up a twin-engine Beechcraft Baron for around $60,000 while a single-engine Bonanza will cost you 3-4 times that amount). It seems so easy: when one engine fails you still have the other left to power the aircraft, right? People often forget that the prop on the stalled engine creates a huge amount of drag, like a stuck paddle on a canoe. You have to compensate for the drag, feather the prop (adjust the angle of the blades to minimize drag) and adjust for that again. When you have sufficient altitude that can be done, but on takeoff or landing you'd have to be a really cool cat to pull it off... As for pilot error: I think that number is actually a lot closer to 100%. This also rings true for car accidents, and I bet most planes are maintained a lot better than cars...