Is spark using obstacle avoidance in RTH mode? As far i know its moving with speed 10m/s.

it supposed to have some form of avoidance.. but my spark is about as dumb as a brick when it returns home.   i had it drag its belly across the ground over a hill..

No it's not , once outside 100 metres as you said moving 10 M/S no OA.

Here is the manual about the OA during RTH for your reference.

DJI Diana Posted at 2017-8-13 18:52
Here is the manual about the OA during RTH for your reference.

ya..no... show me it in action. and rework it..   mine is as dumb as a brick..  the spark is the village idiot of DJi drones.. RTH doesn't usually see a tree until its basically buried itself into the tree ..then at which point it will eat a branch and fall.. RTH also isn't smart enough to see a slowly riding hill and and mine on multiple occasions has dragged its belly on the dirt up a hill..yes i set the height too low intentionally to see if it will see the ground and react to it..but no..

Thank You all

DJI Diana Posted at 2017-8-13 18:52
Here is the manual about the OA during RTH for your reference.

my crash looks just like what is pictured, but the spark sill flew into the tree instead of stopping.
https://youtu.be/bLKlMbUMOpQ

djiuser_tc1PLOA Posted at 2017-9-4 11:55
my crash looks just like what is pictured, but the spark sill flew into the tree instead of stopping.
https://youtu.be/bLKlMbUMOpQ

Sorry for the crash, is the drone damaged? Have you contacted the Support to start a case?

Ouch, that looks horrible.