Problem with pos hold mode

@oscar30340 wrote:

Hi, First sorry for my bad English ..

I have a small problem with an apm 2.5 mounted on a heli kds450.
In pos hold mode, I can move it on all the axis except vertically,
when I reduce the throlle stick, the engine reduces its speed but the apm compensates
with the pitch to maintain the altitude .
so I can neither go down nor climb .
I need to set the stabilize mode to change altitude or to land.

I do not see a solution, if someone has an idea.
Thanks you very much.

And thanks to Google translate !!!!!!!

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