I currently have an old Altrak altitude hold in the Lancair. When I initially installed it, I connected it to the static port. After experiencing a frozen static line one time I removed the Altrak's connection to the static port. I figured it was just an altitude hold and didn't matter what altitude that might be; removing the static port increased its safety because if I were in IMC and the static line froze again, at least the altitude hold would keep me level.
I am currently installing a Trio pro pilot in the RV-9A I recently purchased. I am debating if I want to connect it to the static port.
On the ground the static line pressure should be the same as inside the cabin. In flight I seem to recall there is a decrease in cabin pressure due to the venturi effect. As such, the pro pilot would level off lower than actual altitude selected due to the error.
My question is does anyone know how much the error may be? I presume the error may vary between aircraft and of course both the aircraft in question are not pressurized.
I am currently installing a Trio pro pilot in the RV-9A I recently purchased. I am debating if I want to connect it to the static port.
On the ground the static line pressure should be the same as inside the cabin. In flight I seem to recall there is a decrease in cabin pressure due to the venturi effect. As such, the pro pilot would level off lower than actual altitude selected due to the error.
My question is does anyone know how much the error may be? I presume the error may vary between aircraft and of course both the aircraft in question are not pressurized.