Airplane Flight Manual Supplement
G500 PFD/MFD System 190-01102-00 Rev. 5
Instructions for Continued Airworthiness Page 5 of 13
data on each screen. The function of the soft keys along the bottom of the display is depicted by the text
above the key. There are dedicated ENT, CLR, and MENU keys on the MFD side of the unit.
Turning the PFD knob adjusts the values for the mode selected by the PFD bezel keys, such as,
Heading (HDG), Course (CRS), Altitude (ALT), Vertical Speed (V/S), and Barometric Setting (BARO).
The values are shown in a window to the left of the HSI. Pressing the PFD knob reverts to the default
value of the selected mode.
The Small (Inner) MFD Knob selects a specific page within a page group. Pressing the small MFD knob
turns the selection cursor ON and OFF. When the cursor is ON, data may be entered in the applicable
window by turning the small and large MFD knobs. In this case, the large MFD knob moves the cursor
on the page and the small MFD knob selects individual characters or values for the highlighted cursor
location. The Large (Outer) MFD Knob selects the MFD page group. When the cursor is ON, the large
MFD knob moves the cursor to highlight available fields.
The system starts in normal mode when power is applied to the LRUs. After completing the self-test, the
database confirmation page is displayed. Invalid or expired databases are displayed in yellow. Press
ENT to proceed to normal mode. Normal mode consists of a Primary Flight Display (PFD) on one
screen and a Multifunction Display (MFD) on the other screen. The AHRS alignment should complete
within one minute and attitude should be displayed on the PFD. System alerts are accessible via an
“ALERTS” softkey at the lower right of the MFD. During normal system operation with all aircraft
systems and avionics powered there should not be any red Xs or system alerts on the GDU 620.
To enter into Configuration Mode, verify that the GDU 620 is off and an Installer Unlock Card is inserted
in the SD card slot of the GDU 620. Apply power to the GDU 620 while holding the ENT key. Release
the ENT key when “INITIALIZING SYSTEM” appears in the upper left corner of the display.
Refer to the G500 AML STC Installation Manual for further configuration instructions.
2.4 Servicing Information
In the event of system failure, troubleshoot the G500 system in accordance with Section 2.6
Troubleshooting Information.
If the Mid-Continent Instruments 4300-4XX Electric Attitude Indicator or MD420 battery pack is installed,
the battery or batteries may be charged by one of the following methods:
1. Keep the battery or batteries plugged into the Attitude Indicator or Battery Module. Apply power
to the aircraft and run the unit overnight (approx. 15 hours) at the rated voltage.
2. Float Charging: Disconnect the battery or batteries from the indicator or module. Connect the
battery or batteries to a constant voltage source (battery plug (pin 1) red wire = positive) of 20.4
to 20.6 VDC continuously. Float charging may take 24 hours or longer to charge a battery pack.
3. Routine Charging: Disconnect the battery or batteries from the indicator or module. Connect the
battery or batteries to a constant voltage source (battery plug pin 1 red wire = positive) of 21.6 to
22.1 VDC with a current limit of 0.1 ampere maximum. When the charging current drops to
approximately 5mA, the battery is fully charged and should be disconnected. Leaving 21.6 to
22.1 VDC charge voltage on the battery for an extended time will degrade its life. If continuous
maintenance of the charge is desired, refer to step 2, Float Charging.
****WARNING****
Battery out gassing and a rotten egg odor may occur due to
prolonged high rate overcharging and may result in battery
damage. The battery assembly must be replaced if
out gassing has occurred.
4. The Mid-Continent Instruments Battery Charger/Tester P/N 36029 may be used. This Battery
Charger/Tester will apply an initial charge, per step 3 above, and then automatically switch to
maintain a float charge, per step 2 above, indefinitely after initial charging is complete.