Yesterday I was flying my H over water along the shoreline of lake Huron when the video twitched about 90 degrees and corrected itself in forward facing mode. About 30 seconds later I got a warning that the H was in 5 motor mode, then all connection was lost. It was approximately 1000' away so I missed seeing the actual crash. The video ends before the drop to the water. It took 20-30 minutes to get to the H. It was in approximately 30 cm of water. The H and camera were physically intact except for one motor pod hanging by it's wires with a broken prop. The gear was still retracted, so I guess 5 motor mode doesn't lower the gear. I noticed the body light was still dimly flashing red. I quickly removed the battery to prevent further electrical damage. Returning home I immediately put the battery on my charger/ballancer using QUADCAM's connector. The voltage was just over 9v !!! I charged it to storage charge successfully, so I guess it's ok despite the low voltage discharge. I drained as much water as I could and left the H to dry for a few days. I found that the rivet holding the motor pod to the arm was missing but there was no damage to the arm or pod. It appears that the rivet came out in flight causing the video twitches. The pod then worked it's way off, breaking the prop resulting in the 5 motor mode warning and subsequent water ditching. I will give the H and camera a few days to dry then pack them in rice for a few more days before I try to power up. I will contact Yuneec today.