Iv had a Look at your Litchi Mission -
Nice Terrain to shoot in- ( I fly from a Mountain Ridge - so Have a Fair amount of Experience)
However One needs to be aware that Mountains have outcrops all over the Place - … and the Altitude at one Place can Vary by up to 100m - (Just 5 m horizontally away.)
Smooth curves (helped by Litchi) - may have been the cause of your loss.... (especially flying close to the outcrops)
Anyway ….
So I used
Litchi Hub, Also
Virtual Litchi Mission to Simulate your Views -
and
Google Earth to PLOT the PATH of the DRONE.
Sadly - theres a couple of things that could have gone Wrong - ...
Around
Waypoint 5 - You selected Litchi to make a REALLY strong Curve - which got REALLY REALLY Close to the OutCrop of the Mountain. See the VIDEO Below -
The 2nd Point of Possible Crash (
PPC) could have been when you dropped down into the valley - Possibly too close for accurate measurement by google - and clipped the side of the Mountain - ...
If you succeeded that then then next 20 Waypoints looked Good - with Faster speeds set at 54km /hr ...
But in the Final Home Stretch - when you went over the tops of the Mountain... - You allowed LITCHI to put in some HUGE SMOOTH CURVES (Horiz) - which May have been responsible for you Clipping the tops See wp 32 in the video and the Litchi curve. You were Very close to whacking the underbelly on a few occasions - especially between waypoints on the home stretch..
See on google earth
32 to 33,
waypoints 33 to 34 and
wp 35 to 36. They are possible
PPC's too-
Hope this Helps -
Rob (Rockowe)
See Video - of yr planned Mission (… Suggest you view using highest
HD possible in YouTube, to see the Waypoints clearly)