Hello！Today, the flight tested four rotors and eight propellers. The first two flight normally, and the aircraft rolled over during the third flight. Please analyze it, friends, thank you！
ArduCopter: Copter4.0.3
Log File: https://1drv.ms/u/s!AtY6Wtn1T07Ba_uXPxhkmRxZp8c?e=Ua4Fkt
It’s hard to tell, it looks like there was stick input causing the roll before you got off the ground. But also there’s no motor/ESC logging so it’s impossible to tell if there was a motor or ESC failure from that log.
Stick to one post for the same problem. Cross posting will not help you.