Pitot-Static System

I've installed the two static ports and attached the lines. The pitot-static system measures pressure differential and uses the difference to determine airspeed and altitude. The static ports are in an undisturbed part of the airflow on the outside of the fuselage and measure a consistent pressure unaffected by airspeed. The pitot tube under the wing takes in ram air pressure as it increases with speed and the airspeed instruments compare it to the static pressure to determine airspeed. The altimeter uses the static pressure to compare it to a known sealed pressure and the difference is altitude on the altimeter or rate of change in the VSI.