Garmin G5 Installation Manual page 25

3.4.3 Pneumatic Plumbing
The G5 has two ports that are connected to the aircraft's pitot and static pressure sources. The ports are
labeled on the unit using the abbreviations "P" and "S" respectively (Figure 3-1). The pressure ports have
1/8-27 ANPT female threads. The mating fitting must have 1/8-27 ANPT male threads.
NOTE
The temporary port plugs attached to the pressure ports on a new G5 are not suitable for flight
and must be removed prior to the installation of G5 into the aircraft.
NOTE
In an installation with dual G5 units, pitot/static plumbing must be connected to both units.
Use appropriate air hoses and fittings to connect the pitot and static lines to the unit. Avoid sharp bends in
the tubing and attempt to route hoses away from aircraft control cables. The G5 should not be at the low
point of the pneumatic plumbing lines to avoid moisture or debris collecting at or near the unit. Ensure that
no deformations of the airframe surface have been made that would affect the relationship between static
air pressure and true ambient static air pressure for any flight condition. Refer to CFR Part 43, Appendix E
for approved practices while installing hoses and connections.
NOTE
A G5 installed as a standalone unit may optionally be configured to disable its internal air
data sensors. In this case, no connection to the aircraft's pitot/static system is required. If not
connected, the pitot/static fittings on the G5 should be covered with dust caps. A G5 with air
data disabled does not support autopilot functionality.
190-02072-01
Rev. 2
Figure 3-1 G5 Air Hose Fitting Locations
G5 Installation Manual
Page 3-3