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1-3190-01102-02 Rev. B
Garmin G500 Pilot’s Guide
Foreword
Sec 1
System
Sec 2
PFD
Sec 3
MFD
Sec 4
Hazard
Avoidance
Sec 5
Additional
Features
Sec 6
Annun.
& Alerts
Sec 7
Symbols
Sec 8
Glossary Appendix A
Appendix B
Index
1.1.2 GDU 620
The GDU 620 has dual VGA (640 x 480 pixels) 6.5 inch LCD displays. The
left side of the GDU is a PFD and the right side is the MFD. The MFD shows
a moving map, flight plan, weather, and more. The PFD shows primary flight
information, in place of traditional pitot-static and gyroscopic systems and also
provides an HSI for navigation.
Figure 1-2 GDU 620 PFD and MFD
1.1.3 GDC 74A
The GDC 74A Air Data Computer (ADC) compiles information from the
pitot/static system and an Outside Air Temperature (OAT) sensor. The GDC 74A
provides pressure altitude, airspeed, vertical speed, and OAT information to the
G500 system. The GDC 74A communicates with the GDU 620 and GRS 77
using an ARINC 429 digital interface.
Figure 1-3 GDC 74A Air Data Computer