"Thank you for your reply! You know, I also suspecting my 6-pos connector between 3DR Power Module and APM board, but I'm not sure. Now I replace it with a new one and also flew about 6 batteries without any accidents..."
Hello,My copter was crashed yesterday because of all engines were stopped without any reason. According to the log files the apm receives invalid altitude value from GPS and it looks like it can be an explanation for my accident, but I'm not sure…