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Garmin GFC 600H - User Manual

Garmin GFC 600H
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190-02081-03 January 2023 Revision 3
GFC 600H
Helicopter Flight Control System
Part 27 STC
Maintenance Manual
Contains Instructions for Continued Airworthiness
Rotorcraft Make, Model, Registration Number, and Serial Number and
accompanying STC configuration information in Appendix A must be
completed and retained with rotorcraft permanent records.

Table of Contents

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Summary

1 INTRODUCTION

1.1 Purpose

Describes the manual's design for maintaining the GFC 600H Flight Control System.

1.2 Scope

Details maintenance and ICAs for the GFC 600H FCS installed per STC SR02647SE.

1.5 Terminology

Lists acronyms and abbreviations used throughout the manual.

2 SYSTEM DESCRIPTION

2.1 GFC 600 H Flight Control System Functions

Describes the 2-axis (optional 3rd axis) flight control system and its functions.

2.2 System Overview

Explains the digital helicopter flight control system and its capabilities.

2.2.1 Attitude Hold (ATT)

Describes the system's function in stabilizing the aircraft and holding a reference attitude.

2.2.2 Helicopter Electronic Stability and Protection (H-ESP)

Describes the H-ESP system's capabilities for stability and protection.

2.2.3 Flight Director Modes

Explains the higher level modes available with the GFC 600H FCS.

2.2.4 GMC 605 H AFCS Mode Controller

Details the GMC 605H controller's front panel, functions, and maintenance interface.

2.2.5 GFS 83 Force Trim Servo

Describes the GFS 83 servo variants and their function in the GFC 600H system.

2.2.6 Sensors

Details primary AHRS, Air Data, Magnetometer, GPS/SBAS, and Collective Position Sensor.

2.3 Power Requirements

Lists the operational voltage and current draw for GFC 600H system LRUs.

3 CONTROL AND OPERATION

3.1 GMC 605 H Mode Controller

Details the GMC 605H Mode Controller's modes of operation.

3.1.1 GMC 605 H Normal Mode

Describes the GMC 605H's interface for mode selections and annunciations.

3.1.1.2 GMC 605 H Display and Annunciations

Explains the GMC 605H display layout and annunciation descriptions.

3.1.1.3 Pilot Control Switches

Summarizes the functions of pilot controls located on the cyclic grip.

3.2 Garmin Displays (G500 H Installations)

Depicts visual alerts and annunciations seen on a Garmin GDU.

3.3 GMC 605 H Configuration Mode

Explains how to enter and navigate the GMC 605H Configuration mode.

Software Loading Procedures

Covers software updates for GMC 605H, GFS 83, and remote sensors like GSU/GRS.

4 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS

4.1 Airworthiness Limitations

States that the GFC 600H is airworthy when installed, configured, and maintained per the manual.

4.2 Servicing Information

Describes the 'on condition' servicing strategy for GFC 600H FCS equipment.

4.3 Maintenance Intervals

Lists periodic maintenance intervals and associated procedures.

4.4 Visual Inspection

Details required visual inspections of GFC 600H FCS LRUs and associated wiring.

5 TROUBLESHOOTING

5.1 General Troubleshooting

Describes possible symptoms and recommended actions for troubleshooting the GFC 600H FCS.

5.2 GMC 605 H Mode Controller

Details troubleshooting for the GMC 605H Mode Controller, including LED indicators and CAS messages.

GMC 605 H LED Indicators and CAS Messages

Covers troubleshooting for GMC 605H LED indicators and Crew Alerting System messages.

AHRS;Magnetometer Troubleshooting

Provides troubleshooting for AHRS/ADC faults and connector pinouts.

Connector Pinouts

Lists connector information and pin functions for GFC 600H FCS LRUs.

6 EQUIPMENT REMOVAL AND RE-INSTALLATION

6.1 GMC 605 H Mode Controller

Details removal and re-installation procedures for the GMC 605H Mode Controller.

6.2 GFS 83 Servo

Outlines removal and re-installation procedures for the GFS 83 servos.

GFS 83 Servo Linkage, Arm, and Shear Fuse

Details removal and re-installation of servo control linkage, output arm, and shear fuse.

6.3 GSU 75 H ADAHRS

Provides procedures for removing and reinstalling the GSU 75H ADAHRS.

6.4 GRS 79 H AHRS

Details removal and re-installation procedures for the GRS 79H AHRS.

7 CONFIGURATION AND CHECKOUT

7.1 GMC 605 H Mode Controller

Covers configuration and checkout for the GMC 605H Mode Controller.

7.2 GFS 83 Servos

Details configuration and checkout for the GFS 83 servos.

GFS 83 Servo Range Calibration

Presents methods for performing GFS 83 servo range calibration.

7.3 Collective Position Sensor Calibration

Covers calibration for the Collective Position Sensor.

7.7 Post-Installation Calibration

Describes post-installation calibration procedures for the GFC 600H system.

Pitch; Roll Offset Compensation

Describes the procedure for calibrating AHRS pitch/roll offset.

Magnetic Interference Test

Details the procedure for testing magnetic interference using a GDU.

Magnetometer Calibration

Explains how to calibrate the magnetometer using a compass rose or sight compass.

Compass Swing Test

Describes performing a compass swing to verify AHRS heading accuracy.

8 RETURN-TO-SERVICE

8.1 Maintenance Records

Details information to be recorded in maintenance logs after return-to-service.

8.2 Configuration Mode Functional Checkout

Describes procedures to be performed with external power and GMC 605H in Configuration mode.

Audio Test

Describes the procedure to test the autopilot disconnect audio tone.

8.3 Normal Mode Functional Checkout

Outlines procedures for verifying GFC 600H FCS operation in Normal mode.

FCS Pre-Flight Test

Details the steps to verify the FCS pre-flight test status and annunciations.

APPENDIX A INSTALLATION-SPECIFIC INFORMATION

A.1 General Installation Information

Provides fields for recording general installation details.

A.2 Interfaced Equipment

Documents GFC 600H FCS interfaces with installed Garmin equipment.

A.3 Configuration Log

Provides a structured log for GFC 600H FCS configuration settings.

Summary

1 INTRODUCTION

1.1 Purpose

Describes the manual's design for maintaining the GFC 600H Flight Control System.

1.2 Scope

Details maintenance and ICAs for the GFC 600H FCS installed per STC SR02647SE.

1.5 Terminology

Lists acronyms and abbreviations used throughout the manual.

2 SYSTEM DESCRIPTION

2.1 GFC 600 H Flight Control System Functions

Describes the 2-axis (optional 3rd axis) flight control system and its functions.

2.2 System Overview

Explains the digital helicopter flight control system and its capabilities.

2.2.1 Attitude Hold (ATT)

Describes the system's function in stabilizing the aircraft and holding a reference attitude.

2.2.2 Helicopter Electronic Stability and Protection (H-ESP)

Describes the H-ESP system's capabilities for stability and protection.

2.2.3 Flight Director Modes

Explains the higher level modes available with the GFC 600H FCS.

2.2.4 GMC 605 H AFCS Mode Controller

Details the GMC 605H controller's front panel, functions, and maintenance interface.

2.2.5 GFS 83 Force Trim Servo

Describes the GFS 83 servo variants and their function in the GFC 600H system.

2.2.6 Sensors

Details primary AHRS, Air Data, Magnetometer, GPS/SBAS, and Collective Position Sensor.

2.3 Power Requirements

Lists the operational voltage and current draw for GFC 600H system LRUs.

3 CONTROL AND OPERATION

3.1 GMC 605 H Mode Controller

Details the GMC 605H Mode Controller's modes of operation.

3.1.1 GMC 605 H Normal Mode

Describes the GMC 605H's interface for mode selections and annunciations.

3.1.1.2 GMC 605 H Display and Annunciations

Explains the GMC 605H display layout and annunciation descriptions.

3.1.1.3 Pilot Control Switches

Summarizes the functions of pilot controls located on the cyclic grip.

3.2 Garmin Displays (G500 H Installations)

Depicts visual alerts and annunciations seen on a Garmin GDU.

3.3 GMC 605 H Configuration Mode

Explains how to enter and navigate the GMC 605H Configuration mode.

Software Loading Procedures

Covers software updates for GMC 605H, GFS 83, and remote sensors like GSU/GRS.

4 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS

4.1 Airworthiness Limitations

States that the GFC 600H is airworthy when installed, configured, and maintained per the manual.

4.2 Servicing Information

Describes the 'on condition' servicing strategy for GFC 600H FCS equipment.

4.3 Maintenance Intervals

Lists periodic maintenance intervals and associated procedures.

4.4 Visual Inspection

Details required visual inspections of GFC 600H FCS LRUs and associated wiring.

5 TROUBLESHOOTING

5.1 General Troubleshooting

Describes possible symptoms and recommended actions for troubleshooting the GFC 600H FCS.

5.2 GMC 605 H Mode Controller

Details troubleshooting for the GMC 605H Mode Controller, including LED indicators and CAS messages.

GMC 605 H LED Indicators and CAS Messages

Covers troubleshooting for GMC 605H LED indicators and Crew Alerting System messages.

AHRS;Magnetometer Troubleshooting

Provides troubleshooting for AHRS/ADC faults and connector pinouts.

Connector Pinouts

Lists connector information and pin functions for GFC 600H FCS LRUs.

6 EQUIPMENT REMOVAL AND RE-INSTALLATION

6.1 GMC 605 H Mode Controller

Details removal and re-installation procedures for the GMC 605H Mode Controller.

6.2 GFS 83 Servo

Outlines removal and re-installation procedures for the GFS 83 servos.

GFS 83 Servo Linkage, Arm, and Shear Fuse

Details removal and re-installation of servo control linkage, output arm, and shear fuse.

6.3 GSU 75 H ADAHRS

Provides procedures for removing and reinstalling the GSU 75H ADAHRS.

6.4 GRS 79 H AHRS

Details removal and re-installation procedures for the GRS 79H AHRS.

7 CONFIGURATION AND CHECKOUT

7.1 GMC 605 H Mode Controller

Covers configuration and checkout for the GMC 605H Mode Controller.

7.2 GFS 83 Servos

Details configuration and checkout for the GFS 83 servos.

GFS 83 Servo Range Calibration

Presents methods for performing GFS 83 servo range calibration.

7.3 Collective Position Sensor Calibration

Covers calibration for the Collective Position Sensor.

7.7 Post-Installation Calibration

Describes post-installation calibration procedures for the GFC 600H system.

Pitch; Roll Offset Compensation

Describes the procedure for calibrating AHRS pitch/roll offset.

Magnetic Interference Test

Details the procedure for testing magnetic interference using a GDU.

Magnetometer Calibration

Explains how to calibrate the magnetometer using a compass rose or sight compass.

Compass Swing Test

Describes performing a compass swing to verify AHRS heading accuracy.

8 RETURN-TO-SERVICE

8.1 Maintenance Records

Details information to be recorded in maintenance logs after return-to-service.

8.2 Configuration Mode Functional Checkout

Describes procedures to be performed with external power and GMC 605H in Configuration mode.

Audio Test

Describes the procedure to test the autopilot disconnect audio tone.

8.3 Normal Mode Functional Checkout

Outlines procedures for verifying GFC 600H FCS operation in Normal mode.

FCS Pre-Flight Test

Details the steps to verify the FCS pre-flight test status and annunciations.

APPENDIX A INSTALLATION-SPECIFIC INFORMATION

A.1 General Installation Information

Provides fields for recording general installation details.

A.2 Interfaced Equipment

Documents GFC 600H FCS interfaces with installed Garmin equipment.

A.3 Configuration Log

Provides a structured log for GFC 600H FCS configuration settings.

Garmin GFC 600H Specifications

General IconGeneral
BrandGarmin
ModelGFC 600H
CategoryControl Systems
LanguageEnglish

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