"nobody :-( it looks like i will send the PX4Flow sensor back ..."

"upps, wrong forum should be in Copter ;-("

"please post a log, is the EFK enabled ?
Thanks
Thomas"

"i'm having the same issue on 2 machines ! both pixhawk
100% reproducable in alt-hold or pos-hold, can someone explain what this Error exactly means ?
Bad variance of what values ? any idea how to solve / debug it ? my solution at the moment is to…"

"Hi,

I had a very strange crash today with my test copter (powerfull and rigid race machine)
All was fine crusing FPV in Pos-Hold and suddenly the copter gave 100% throttle.
I switched to Stabilize but it didn't stabilize then to Acro followed by…"

"ok after another compass calibration + compassmot
and props rebalance :-) 
Test: Autotune = UNKNOWN - No ATUN log dataTest: Balance/Twist = GOOD - Test: Brownout = GOOD - Test: Compass = GOOD - mag_field interference within limits (14.84%)
Test:…"

"Thanks Nathaniel !
I will follwow your guidelines and let you kown the results.
Great support :-)
Thomas"

"ok, here the bin2014-11-15 15-51-43.bin"

"nobody :-("

"upps.. file was too big and no error message :-(2014-11-15 15-51-43.rar"

"Hi,
I was flying today with my quad and had strange issue with RTL, as soon i switched into RTL the copter descent fast and landed (nothing broke but i cannot find the reason why this happend. (it is the second occurrence on this quad) tried…"

"Upps forgot to enable it ... DONE
here a log of Acro flight with some RTL test :-)
in the flight before i reached 25m/s top speed.
Fun with this small bird.
Thanks Thomas2014-10-04 16-55-40.bin"

"Hi,
I switched to RTL and due to the fact i'm using Autorotation flight Mode on my transmitter as RTL it cuts of the throttle at the same time. (btw throttle FS is set to RTL)
After changing the Throttle in Autorotation Mode to 50% RTL works fine.
I…"

"ok i have set throttle to 50% for rtl now ! will try again today and post the results

Thanks
Thomas"