static system

On climb out the airspeed,altimeter and vsi, all where responding slow. Switched to Alternate static source and the problem went away. And after a few minutes switch back to normal static and the problem did not reappear. Has anyone experience a similar problem? Larry
75VK Sr-22 #153

I’ve seen this when flying in rain - it seems a drop or two of water can accumulate at the static port openings and make the static system “jerky”. I wonder if the step that is built into the front of the static port contributes to this.