The same thing happened to me. I switched the stock props on my mini 2 to some pretty red and white ones from amzn trying to gain who knows what. Speed ,sound something silly. I've flown many hours using stock props without a single incident. I use a magnifying glass and look for tiny cracks that may have started from slashing through the bodies of hard shelled insects or who knows what airborne dirt. I think the prop n screws are a good setup. What better could you want. My drone ended up on the mall roof and I had to wait till the next day to retrieve it. Was a sleepless night I tellya. The prop that broke was nowhere to be found but the screw was locked down. Dji wouldn't scrimp on something like screws or they would have an epidemic of premature cŕashes dont you think. .
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