Airplane Flight Manual Supplement

AFMS, GARMIN G500/G600 SYSTEM 190-00601-01 Rev. K

FAA APPROVED Page 12 of 51

1.2 System Power Sources

The G500/G600 system depends on electrical power to function. The Garmin

Display Unit (GDU), Attitude and Heading Reference System (AHRS), and Air

Data Computer (ADC) are directly tied to the aircraft’s main or essential bus and

energized when the aircraft master switch is turned on. Other systems, like the

navigation equipment, weather datalink, autopilot and Adapter (GAD) are

typically located on the avionics bus and may not be functional when this bus is

powered off.

The major components of the G500/G600 are circuit breaker protected with

resettable type breakers available to the pilot. These breakers are located at the

main or essential bus circuit breaker panel and labeled as follows:

Circuit

Breaker

Label

Equipment

PFD

Garmin Display Unit (PFD/MFD), GDU 620

AHRS

Attitude and Heading Reference System, GRS 77

ADC

Air Data Computer, GDC 74A/B

GAD

Garmin Adapter, GAD 43/43e

STBY ATT

Electric Standby Attitude Indicator (Except L-3 Trilogy

and Mid Continent SAM installations)

In dual installations the pilot side equipment is suffixed with the number 1 and

the copilot side equipment is suffixed with the number 2. For example: PFD 1

and PFD 2.

Equipment that receives power from two different circuit breakers will be

suffixed with the letters A and B. For example: PFD 1A and PFD 1B, or

PFD 2A and PFD 2B.

1.3 Navigation Sources

The G500/G600 requires at least one Garmin GPS/SBAS navigation unit to

ensure the integrity of the Attitude and Heading Reference System. The AHRS

will still operate in a reversionary mode if the GPS fails, and the attitude display

on the PFD will still be presented, see Paragraph 2.8. The G500/G600 HSI can

be selected to display course deviation information from up to four independent

sources: two GPS, and two VHF NAV. In addition, the HSI can display two

simultaneous bearing pointers sourced from GPS, VHF NAV, or ADF. DME

distances can be displayed adjacent to the HSI.