firmware 2.8 - auto mode / crash ..

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My last posted issue unanswered, repeating...

APM 2.5 arducopter, new firmware 2.8
Mission planner 1.2.14 mav 1.0

after wypoint "2" (not 3) arrived to "home", completely gone throttle and 
dropped from 15 meters altitude.
waypoint's screenshot: http://www.reboot.lt/planner.jpg
My Hexacopter break into pieces.

Log: http://www.reboot.lt/APM2.5_problem_log.rar

--- --- ---
i have not moved sticks, do not change modes and etc. All actions was 
automatically after RTL. 
when copter fall,- only at this moment i tried to increase the motors speed, 
but.. they are not spin, only after crash tried to spin, lol.
--- --- --- 
did not lost radio contact, FrSky with telemetry module do not beep at this 
moment.

checked radio failsafe:
Throttle: ~45%
Mode: RTL

who know where can be problem ?

Original issue reported on code.google.com by smscentras on 22 Oct 2012 at 6:47

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P.S. i don't have LOITER mode on buttons, why log show after AUTO - Loiter mode 
?
there i see big problem..

Original comment by smscentras on 22 Oct 2012 at 7:06

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I had a look at your config. Are you using your radio for Channel 5 mode 
control? You're defaults are all wrong.

RC5_MIN: 0
RC5_TRIM: 1500
RC5_MAX: 1700

That should be something more like 

RC5_MIN: 1100
RC5_TRIM: 1500
RC5_MAX: 1900

The min set as zero is really troubling. Can you explain how you configured 
your radio?
Jason

Original comment by jasonshort on 22 Oct 2012 at 7:45

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yes, i'm using my radio channel 5, to control all necessary modes.
with RC_5 all ok and not null(tested, working all buttons and modes).

configured radio:

Terminal -> Setup -> Radio
move all sticks to maximum/minimum, after that all need buttons on/off
after that - ENTER

...
CH5 988|1700

Original comment by smscentras on 22 Oct 2012 at 11:39

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Hi,
I had a similar incident in auto mode on 2.8.1
Check here for log / description 
http://www.diydrones.com/group/arducopterusergroup/forum/topics/crash-during-mis
sion

Original comment by Benny.Si...@gmail.com on 21 Nov 2012 at 9:16

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Some of my problems were caused by failsafe behavior on 2.8.1 where the mode 
could change during failsafe. In my initial RX failsafe that resulted in 
stabilize with zero throttle! (not safe).
The failsafe behavior is fixed in 2.9

Original comment by Benny.Si...@gmail.com on 19 Jan 2013 at 6:37

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Issue closed. 
If you find this is an error please report it in the new issues list
https://github.com/diydrones/ardupilot/issues?labels=ArduCopter&page=1&state=ope
n

Original comment by Benny.Si...@gmail.com on 19 Jan 2013 at 6:38

• Changed state: Done