Airplane Flight Manual Supplement

G500 PFD/MFD System 190-01102-00 Rev. 5
Instructions for Continued Airworthiness Page 4 of 13
2. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
2.1 Introduction
Content, Scope, Purpose and Arrangement:
This document identifies the Instructions for
Continued Airworthiness for the modification of the
aircraft by installation of the Garmin G500
PFD/MFD System.
Applicability:
Applies to aircraft altered by installation of the
Garmin G500 PFD/MFD System.
Definition of Abbreviations:
See Section 1.6
Precautions:
None
Units of measurement:
None
Referenced publications:
Garmin 190-01102-06 Rev. 7 “G500 AML STC
Installation Manual” or later revisions
Retention:
This document, or the information contained within,
will be included in the aircraft’s permanent records.
2.2 Description of Alteration
The Garmin G500 PFD/MFD System is a combination of Garmin LRUs designed to provide both a PFD
and MFD in the primary field of view. The system consists of a GDU 620 display, GRS 77 AHRS, GDC
74( ) ADC, GMU 44 magnetometer, and GTP 59 outside air temperature probe. This modification may
also include a Garmin GAD 43 Adapter and/or Mid Continent Instruments attitude indicator (models
4300-4( ), or 4200-( ) with MD420). Installation of the Garmin G500 system, specific for the aircraft
installation, is documented in the G500 AML STC Installation Manual.
2.3 Control, Operating Information
The GDU 620, GRS 77, GMU 44, and GDC 74( ) are powered by an electrical bus which is normally
energized with battery, generator, or external power applied to the aircraft. The GAD 43/43e is typically
powered by an avionics bus which is normally controlled by the avionics bus power switch. The LRUs
do not have individual power switches and are powered when the bus is energized and the circuit
breakers are closed. The following circuit breakers provide power to the individual LRUs:
• PFD: GDU 620
• AHRS: GRS 77 #1 and GMU 44 #1
• ADC: GDC 74( )
• GAD: GAD 43/43e
In a dual G600 installation, the PFD, AHRS, and ADC circuit breakers are suffixed with the numbers 1
and 2 (i.e. AHRS 1 and AHRS 2). If an LRU is optionally powered from multiple circuit breakers, then
the circuit breakers will be suffixed with the letters A and B (i.e AHRS 1A and AHRS 1B).
The GDU 620 has a PFD and MFD display and front panel controls for performing all normal and
configuration operations. Knobs at the lower left and right corners are used for selecting and entering