My question is, “How can I avoid a repeat?”
DVR review: While in loiter mode (116 ft altitude, 58% throttle), my quad went into RTL (116 ft, 58% throttle). I clicked into loiter. The throttle instantly reset to zero (111 ft). The quad fell like a rock. I pushed the throttle up (throttle 100%, 81 feet) but the quad continued to drop and roll. It hit the ground & immediately started climbing again (still in loiter mode, throttle still 100%). Then, it automatically changed to land mode (11 ft, 100% throttle), but kept climbing and was uncontrollable (throttle changed to 85%, then to 56% which was about where it was at when it went into RTL). The throttle then changed to 95% (I could have done this), then it automatically reset to 50% and stayed in land mode). It then crashed into a wall.