Hi I have flowm R/C fixed wing and helis for years but have just started with copters .
I bought a 525 from Goodluckbuy China and it came with a Kk board it flies OK with that .
But I wanted more so I got an Ardupilot Mega V2..5 some set up issues but I got it working .
Now the question first flight on the patio ut was stable BUT it suddenly flipped backwards . I had stabilise set on all switch positions .
I got a new prop! reset ESCs flew it over grass keeping low used up the batterey no issues except trim out .
Discovered Auto trim set althold and loiter on CH5 and tried again .
Trim worked Ok . Flew again tried flight modes but stayed low .
Sudden violent flip to left and it hit vertical . I am noew waiting for new props the rest seems to be OK .
Now the big questioin can I maKe sure it doesnt happen agaoin??
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