Hey Guys.... Not a fun post this one and I see many others have had similar experiences I bought my P2 about 10 days ago and fitted the 3D gimbal my GoPro H3 and the Boscam 5822 transmitter plus cloverleaf antennas to link through to FatShark headset. It had completed 9 flights when on the 10th it suddenly fluttered and dropped like a stone from around 45m height and 20m distance. The P2 had had the compass calibrated prior to the 9 flight (same location just prior to the 10 flight) the GPS was indicating 7 satellites and the signal led's were indicating green. I took off and was flying around the Dubai Marina area getting some great shots flying on the FatShark headset. I took the P2 up to just over 100m and did a slow turn and then started to bring it back in for a landing since the battery was down to 40%. All going well a steady slow decent and slightly forward, stopped in a hover at 45m for a few seconds and suddenly the P2 just fluttered wildly and dropped into the marina never to be seen again.....a jet ski was nearby and dashed over to get it but it had already sunk. I had vision all the way down to when it hit the water. The weather was perfect, 35C little to no wind. I have experience flying nitro helicopters in the past and was really enjoying the Phantom! Interestingly I had flown twice in the morning and on the second flight the P2 was at about 90m and 60m out when suddenly it did a large flutter, almost like something had flown into it but there were no birds around. It recovered and I found I could not yaw to the left at all, just to the right. I brought the P2 back to me using the FatShark goggles and doing turns right when I needed to correct heading. This lasted for about a minute then it seemed to recover full yaw control. This was the 8th flight of the Phantom. I checked it over and all seemed to be well so I thought nothing more of it and indeed as you can see above the 9th flight was normal and no snags. The 10th as mentioned above had the same flutter but this time it just fell like a stone fluttering all the way. Something is wrong with the machine! I am so annoyed I followed the instructions precisely and I am aware of giving it time to GPS and home lock plus compass calibration. All of which were done correctly prior to the 10th flight (compass calibration prior to 9th flight) As I said I also fly nitro helicopters and also fly for a living as a pilot so I am aware of GPS systems and requirements and to follow SOPs. This machine was faulty .... and from what I am reading its not the first to have this problem.