Spark Crash with tons of "yaw errors" - expert analysis please.

[tfrank48]

What could cause so many yaw errors.

[This ended in a crash, but with apparently only a broken prop.]
I flew my sparky since (short flights), with no apparent problems.
I am aware I only had 8 satellites on takeoff and 42% battery [after the fact] ... I know, "bad boy"!
Somehow I grabbed the wrong battery [out of the 3] even though I swore
that I charged all 3 batteries in the charge bank the evening before.
I had flow the day before and no problems either.
I'm not looking for a lecture on poor judgement, pre-flight, etc.
I guess I was just blinded by the awesome Switzerland scenery.
I have an Phantom 3A, Mavic Pro & Mavic Zoom with no crashes.
I'd just like to know if I might have a defect in Sparky, just waiting ......to CRASH
Why didn't I take one of the other better drones you might ask ....
Insurance in Switzerland - you have to have 1 million in liability
for drones 500 grams or more ... Sparky weighs 300 grams at takeoff.
I believe the Mavic Air is under the 500 gram limit also, but I don't own one.

link to Airdata UAV flight record for that flight:
also I attached the flight record txt file [tried to upload the cvs, but that extension isn't allowed.

 

[MeadowSpark Lemon]

I think you over flew your battery.
Looking at the cell graph the first downward spike after all the cells drop bellow 3.6v each coincides with the first yaw error.
Not knowing how the Spark is wired I assume that things like the camera, gyro and IMU may be powered by only one cell.
When that said cell gets nears or drops below 3.3v things go bad quick.

I am glad you did not have to go for a swim!!!

 

[tfrank48]

I think you over flew your battery.
Looking at the cell graph the first downward spike after all the cells drop bellow 3.6v each coincides with the first yaw error.
Not knowing how the Spark is wired I assume that things like the camera, gyro and IMU may be powered by only one cell.
When that said cell gets nears or drops below 3.3v things go bad quick.

I am glad you did not have to go for a swim!!!

Appreciate your time to respond and feedback!