After having quite a few successful flights with the Ardupilot i decided to go a bit further away. When the plane got the first waypoint (i had lost the telemetry link) it nose dived straight into the ground but some how it corrected itself and it flew back without any problems all previous flights I have had no problem. My setup is the APM 1.4 2650 with Arduplane v2.32 as far as i know i set the waypoints properly will post a video on youtube soon.
Sounds like you had a radio out-of-range loss. You might want to check out what your RC system does in case of link loss and see if you can set up a proper failsafe behavior.
I have setup the failsafe to go into RTL and I has worked fine when i have tested it.
Check your onboard logs and see if you can find a clue to what went wrong.
Had a look at them and they only give the GPS coord and the the 3 gyros information so not much help.
Does the datalogging stop or pause when the issue occurred? That would be a sign of a power brownout.
It keeps recording it the whole time
It does a similar thing when it is coming back to home and it is at lets say 200m and the home alt is set at 100m then it pretty much nose dives to that altitude but not as steeply as this time.
Sounds like your pitch PIDs are too high.
It has never done this before at a waypoint there must be more to it than just the gains.
Hein: Have you posted an Issue? The developers won't look at reports posted in the discussion forum (there are too many threads to keep track of).