Everyone who has spent anytime in the RC hobby knows the feeling you get when your model fails to respond to your controls... it happened to me yesterday.
It was a great day for flying and I decided to take my Quad out for a mid day spin. Flew an entire 5000MAh without incident after upgrading to 2.8. I few stable mode, Alt Hold with simple Mode, and Loiter....all was working really well. I had never really flow in simple mode before but I thought I would give it a try. It seemed like a stress free way to wing the quad around.
For the next battery I made no config changes and was generally flying around spending some time in loiter mode as it was a little breezy and it was a good test. All was working fine. I then went to Alt Hold with simple mode turned on and was doing a typical circuit. On the return leg I felt disconnect from the model. I was giving it left input and it was not responding. The quad then banked a bit and I needed to give it forward and left input to correct... no response. At this point it was moving at a very high rate.. I tried bumping the throttle to climb out of harms way.. again nothing. Then it all ended with a ~25 mph smash into the back of my SUV.
Quad was in a few pieces nothing than cant be repaired... truck now has two dents in the back.
Obviously I am upset but I want to understand what happened. I have not used with any degree of success the logs or telemetry that this thing stores and I want to ensure I get something that someone knowledgeable can help troubleshoot.
Assuming my APM turns on.. can someone give me the idiots guide to what is needed. I have pulled logs off the dataflash before but never really understood how to use them in detail.