Mine was coming down after I commanded auto land. It was about 2" off the ground and it surged forward. It caught the front landing gears on concrete and flipped over endo style and clipped two bystanders in the leg. Cut one of their legs and broke one prop the other three props are scratched up. I was not inputting any commands when this happened.


Compass and IMU calibrated before flight and running latest firmware on everything.

Sorry to hear!   Must have lost GPS at a critical time.   

Still, you would think that if it's auto-landing it would have a safe-guard against this and just keep coming down.   Worst case scenario is you have to manually shut down with the remote.   Would prefer that to a crash!

:@

Was prepare to land, landing gear lower, in less than 1M above the ground, then thought of try out the auto landing.
Once launch the auto landing feature, the copter rise to about 30M in speed and then cannot gain any control with the remote, when it reach about 30M all 4 motor cuts off by itself and have a FREE FALL straight & hit the ground!!!! Luckily it was a clear compound. The right carbon, gimbal, 2 propeller and the top all break apart

We have been flying all the DJI IMU & copters for years, never experience anything alike before!!!

I would never auto land.  Why risk it especially with all of the horror stories out there.  I land manually about 90% of the time and catch the rest.   I only catch when I am on sand or on a boat.

bostonlines@gma Posted at 2015-4-21 02:06
I would never auto land.  Why risk it especially with all of the horror stories out there.  I land m ...

How do you shut down the motors if you catch it? I don't think I can do CSC with one hand holding the bird.

justin.mah Posted at 2015-4-21 02:10
How do you shut down the motors if you catch it? I don't think I can do CSC with one hand holding  ...

Once you catch it, hold down throttle and the motors will stop.  Then slowly bring it down to let the auto landing gear initiate.  

Watch this video...this is exactly what I do.

Notice he says don't do it unless absolutely necessary.  Great Advise.  Too dangerous

mine did the same thing during a return to home.  Luckily I canceled it a millisecond before smashing a tree.

Did anyone have a problem with the auto Iris after the update? it looks like when in sun light it will open all the way and will not adjust I then need to set it in manual and then adjust it. Anyone having this problem, it was fine before the update.

It has nothing to do with auto land and everything to do with you letting the pack run down to almost nothing.
How do I know? - lol
The craft will wig out in ground effect with the last spurts of juice not supplying what the esc's are asking for.

Don't run your packs down to zero - or else


Bob

Wish that was it. I was at 30% when this happened.