Name: Garmin GFC 600
Brand: Garmin
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190-01938-00 2017 - 2023 Revision 13

GFC 600

Automatic Flight Control System

Part 23 AML STC Maintenance Manual

Includes Instructions for Continued Airworthiness

for STC SA01844WI

Table of Contents4
Introduction7
Content, Scope, Purpose7
Applicability7
Organization7
Definitions/Abbreviations8
Reference Publications9
Table 1-1 - Required Documents9
Table 1-2 - Garmin Reference Documents9
Revision and Distribution10
Garmin Technical Support10
Table 1-3 - Other Reference Documents10
System Description11
Equipment Descriptions11
Figure 2-1 - GMC 60511
Figure 2-2 - GI 28512
GFC 600 Interfaces13
Power Requirements13
Table 2-1 - Power Requirements13
Electrical Bonding14
Figure 2-3 - Electrical Bonding Preparation - Nut Plate14
Table 2-2 - Electrical Bonding14
Figure 2-4 - Electrical Bonding Preparation - Bolt/Nut Joint15
Figure 2-5 - Electrical Bonding Preparation - Terminal Lug15
Control and Operation17
Gmc 60517
Autopilot Disconnect/Trim Interrupt Switch17
Pitch Trim Switch17
Control Wheel Steering (CWS) Switch17
Go Around (GA) Switch17
Low Bank Switch18
Roll Trim Switch18
Yaw Trim Switch18
Rudder Bias Switch18
Instructions for Continued Airworthiness19
Airworthiness Limitations19
Servicing Information20
Maintenance Intervals22
Table 4-1 - Maintenance Intervals22
Visual Inspection23
Table 4-2 - Visual Inspection Procedure23
Electrical Bonding Test24
Table 4-3 - Lightning Strike Inspection Procedure24
Sonalert Functional Test25
GSM 86 Slip Clutch Torque Check26
GSM 86 Clutch Disengagement Check26
Yaw Trim AP DISC/TRIM INT Switch Check28
Troubleshooting29
GMC 605 Configuration Mode Test Faults29
Table 5-1 - Configuration Mode Test Faults29
GMC 605 Normal Mode Failure Annunciations31
Table 5-2 - Normal Mode Failures31
GMC 605 Troubleshooting33
GSA 87 Troubleshooting33
GI 285 Troubleshooting34
GTA 82 Troubleshooting34
GSA 80/81 Troubleshooting34
Backshell/Backplate Connectors34
Figure 5-1 - GMC 605 Backplate, Viewed from Rear of Rack34
Figure 5-2 - GMC 605 Connector View from Wire Entry (P6051 and P6052)35
Figure 5-3 - GSA 87 Connector View from Wire Entry (1P871, 2P871, 3P871, 4P871)35
And GTA 82 Connector View (P821)35
Figure 5-4 - GI 285 Connector from Unit Side (P2851)35
Figure 5-5 - GSA 80/81 Connector View Looking at Connector (J801)35
Equipment Removal & Installation36
Gmc 60536
Figure 6-1 - GMC 605 Installation and Rack/Backplate Assembly37
GSA 87 Servos38
Figure 6-2 - GI 285 Installation38
GTA 82 Trim Adapter40
Air Data Module (ADM)41
Figure 6-3 - ADM Installation41
Configuration Module Removal & Replacement42
Figure 6-4 - Configuration Module Installation42
Table 6-1 - Configuration Module Kit42
GSA 80/81 Servos43
Figure 6-5 - Servo Output Gear44
GSM 86 Servo Gear Box45
Garmin Gfc 600 Lru Replacement/Configuration & Testing46
Gmc 60546
GSA 87 Servo46
GI 285 AFCS Mode Annunciator47
GTA 82 Trim Adapter47
Configuration Module47
Air Data Module (ADM)47
GSA 80/81 Servo48
Gfc 600 Software Load and Configuration Procedures49
GMC 605, GSA 87, GSA 80, and GSA 81 Software Loading49
GI 285 Software50
GFC 600 System Configuration51
Figure 8-1 - Configuration Pages Block Diagram51
Gfc 600 Return to Service Procedure58
Pitot and Static System Leak Check58
Configuration Mode Tests58
Pre-Flight Test (PFT)61
Normal Mode Tests62

Brand	Garmin
Model	GFC 600
Category	Autopilot System
Language	English

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