I’m not able to find it in the video linked below right now, but if I remember correctly, helicopter programs are pretty deadly in general. The Apache and other helicopters had a bunch of crashes when they were introduced, they just have had much longer to work out all the problems. But I don’t remember what the exact failure rate comparison is, especially since you’d need to adjust for fight hours. The Osprey is definitely pretty complex with it’s folding wings and rotors.

https://youtu.be/xKdiAbJFB-o