What Happened / Crash Analysis

[MikeinMO]

Good evening. Attached is a flight log from my Mini 3 Pro, which crashed. I was hoping someone could provide an analysis of what happened. Thank you!

 

[Meta4]

It's always easier with a short description of what happened or what you observed.
But here's what I make from the data.

It looks like you launched (without waiting for GPS or to have the drone record a home point) and climbed to about 15 feet and started to fly backwards.
As you started to fly backwards, it looks like the drone started to run away from you, accelerating and quickly crashed.
It might have curved off to one side, but I can't tell much because you didn't have good GPS location data.

What can you tell about the spot where you powered up and launched?
Perhaps it was a reinforced concrete surface?
What direction was the drone pointing at launch time?

I can see that you had a yaw error which was caused by powering up somewhere with magnetic interference.
before launching and until the drone reached 15 feet, the compass indicates that the drone was pointing northeast at 56°.
Although you never used the rudder to rotate the drone, the compass heading started changing and swung to 94° (east) before the drone crashed at 11.9 seconds.

BTW .. although you should have waited for GPS reception and home point recording before launching, that didn't cause the incident.
This crash would have happened with or without waiting for GPS.