I agree it is best to find the problem. The copter was tuned nicely and flying quite well for some time. Also at the last flight. The only difference to other flight was to fly in POSHLD as I normaly fly in STABILIZE. I also was flying fast to left side holding the the stick at full. Everything was as expected when the motors turned off.
I dont have logs of the other to crashes as they are a few years ago. I am not mentioning crashes because of my own fault ore crashes due to a problem with MP.
Here are the links where I have writen about it:
http://discuss.ardupilot.org/t/err-crash-check-1/12323
Thank You
Derek
PS: I have red the wiki.