My sympathies David, I just had a crash myself, so I know the pain. I've read a lot of posts where MK electronics have failed while in PH or AH resulting in crashes. If I'm doing any operation where people are in the vicinity those functions remain off. Not that that eliminates any chance of malfunction (I just crashed mine in manual), but I think it dramatically reduces it. Those functions have proven unpredictable. All operations can be performed better and more accurately when in manual, I think if people want to protect their investment and people on the ground, they need to learn how to operate these things without PH, AH, or any of the other autonomous functions. I'm only talking MK here, maybe some of the other manufacturers (or future manufacturers) don't have these issues. I look forward to the day when my Cinestars will be MK free.