Instructions for Continued Airworthiness G600, GNS 530W, GNS 430W, 190-01080-05 Rev. 2
GMA 347, GTX 330D, GMX 200, WSI AV-200 Cessna 208/208B Page 18 of 29
4. Perform a leak check of the pitot-static system and observe the airspeed, altitude, and vertical
speed for proper operation.
2.7.5 GAD 43
2.7.5.1 Removal
1. Gain access to the GAD 43 (see General Arrangement Drawing for location)
2. Disconnect the GAD 43 connector.
3. Remove the six mounting screws.
4. Carefully remove the unit.
2.7.5.2 Installation
1. Place the GAD 43 in its mounting location and align its mounting holes with the nutplates beneath
it.
2. Insert the six mounting screws and tighten the screws to hold the GAD 43 in place.
3. Inspect the connector and pins for damage. Repair any damage.
4. Connect the connector to the unit, ensuring that each slidelock is secured on both sides.
Original GAD 43 is Reinstalled
If the original GAD 43 is re-installed, then no software loading or configuration is required. This does
not include units that were returned for repair as their software and configuration files are deleted
during the repair testing process.
New GAD 43 is Installed
If the GAD 43 is replaced with a new, repaired, or exchange unit, then software must be loaded to the
unit and the configuration must be reloaded into the GAD 43. Refer to Section 4 of the appropriate
Modification Summary for GAD 43 Software Loading procedure. Verify that the configuration settings
are correct on the GAD 43 Configuration page.
NOTE
Viewing the GAD 43 configuration page on the GDU 620 causes the configuration values
GAD 43 configuration to be written to the GAD 43.
2.7.5.3 Return to Service
After removing and reinstalling the GAD 43, the following return-to-service checks should be performed.
1. Power up the G600 system with the GDU 620 in configuration mode.
2. Conduct the GAD 43 Adapter Attitude Check in Section 5 of the appropriate Modification
Summary
3. Restart the G600 system with the GDU 620 in normal mode.
4. After valid attitude information is displayed on the GDU, verify that there are no GAD alerts in the
alerts window. If alerts are present, troubleshoot using Appendix A of the appropriate Modification
Summary.
5. Engage the autopilot and verify that the servos are active.
6. Press the AP TEST soft key on the PFD. Verify that the autopilot disconnects and the servos
disengage.
2.7.6 GNS 530W/430W GPS/NAV/COM
2.7.6.1 Removal
To remove the GNS 530W or GNS 430W unit from the mounting rack, insert a 3/32-inch hex drive tool
into the access hole at the bottom of the unit face. Rotate the hex tool counterclockwise until the unit is
forced out about 3/8 inches and can be freely pulled from the rack.
2.7.6.2 Installation
The GNS 530W or GNS 430W unit is installed in the rack by sliding it straight in until it stops, about 1 inch
short of the final position. Insert the hex drive tool into the access hole at the bottom of the unit face.
Rotate the hex tool clockwise while pressing on the left side of the bezel until the unit is firmly seated in
the rack.
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