Drone prop stops in mid air

Hi ,
I have a s500 quad with
Emax mt 2213
Favorite littlebee esc 30a
Radiolink pixhawk 2.4.8
Se100 gps
I have that quad since 5 month fly time more than 50 hr … i just fly it in moring as a routein flight have proper signal and fly upto 20 25 m then suddenly all the motor stops spinning and crashed 1 arm got broken with lots of wire tear and when i just bring the pixhawk it wont bootup and the central led not flashing . Then by removing the sd card and putting it back it boot up and working fine now … i dont know what stops the ,motor this carsh lost my drone arm nd the battery was completely damaged … please help me with proper issue . Untill i know the issue i cant move further … i am attaching the log file

Looks like a total loss of power. It abruptly stopped logging so the Flight Controller lost power.

The Tune isn’t great and the Notch Filter reference is improperly set so it’s not doing anything and there is output oscillation most likely because the PSC_ACCZ_P&I parameters are at default.

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Okay dave thanks for the reply … i appreciate but can you please mention what is the cause of power loss is it power loss to pixhawk only or powermodule issue . Because after the crash my battery was completely damaged i have to discard it … but my question is some time when i boot my pixhawk it doesnt beep with bootup sound and the main rgb led wont flash and not detect by pc also but when i remove the sd card format it and reinsert it boot up correctly … is type of failure of pixhawk happed in mid air responsible for this catastrophic coz after the crash it wont boot up i repeat the same step and it bootup again … i want to know the exact cause is my pix is defctive or what …
Anthother question is pixhawk 6c mini is a good option ?

There can be many causes of a power loss. Bad solder connection. Failed power module. Loose wire. However almost all of them are impossible to discern from this view. You’ll have to have a good, critical look at your hardware to figure out why the power went off.

Radiolink do not have a good reputation here and there has been issue with them in the past.

The Pixhawk 6C mini is a good controller. I’ve used several and never had an issue with them.

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