Hello lovely forum,

so today i had an interesting experience. I flew my drone (i am pretty new to this hobby, it was maybe my 40th flight or something) like 200m horizontally and 100 meters vertically away from me. Connection was super, even for 5.8 Ghz Dji, i had 50Mbps, the crossfire (250mw) signal was also fine throughout the event. Now, very casually, about 2 minutes into the flight, the drone seems to have stopped giving any kind of throttle. It was still armed, the motors spun and the onboard recording of the 03 continued, but it dropped. Neither GPS rescue, nor Angle mode or any stick input changed the drones behavior. it just dropped. This is especially weird, because at r×_loss, failsafe should have activated, and if it did not failsafe, why did it drop at all? This is the basic question of this post. Because i landed on solid concrete, i destroyed a battery, 3 motors, and because of my dumbness to try and boot the drone without a smokestopper after the event an ESC. Wow. that was about 200€ worth of stuff. 

The real question is: has anyone got a clue, what happened? The problem is, i haven’t got goggle DVR recordings, because the SD-card was full and i didn’t bother to empty it for a last flight.

Also interesting is, the  Current reading, after the accident, said, while disarmed, 100A. Now, a possibility would be a broken ESC? Another possibility i thought of, is that my ESC to FC connector was not properly secured, which may have cut off the Motor lines, but have left Energy flowing through sill connected pins. I think this could be, because this was the case after the crash, however, i cannot say if the loose connection on the fist hand.

I would love to have any input, especially as i already ordered all my parts for a 6“ long-ranger, and i really do not want this to happen there again.

PS: I am using a tango 2, dynamic power turned off. In addition, i think, in the past i have had some micro failsafe, but as a result of very low experience, i am not sure if it was as just me pushing the throttle a little too hard. PPS: i am not even sure, if this is the correct thread for this topic, orrect me if i am wrong.

It could have possibly been some kind of brownout with one of the voltage regulators but it's difficult to say. Do you have a blackbox log of the flight? That can sometimes help to shed some light at to what happened when you end up getting an unexpected incident during a flight.