Garmin GTN 6 series Maintenance Manual - page 32

System Maintenance Manual GTN 6XX/7XX Part 23 AML STC

190-01007-A1

Page 3-12

Rev. 6

3.4.4.1

TAWS-B Enablement

When the optional TAWS feature is enabled, the GTN will provide Class B TAWS functionality. This 

section describes how to reactivate the TAWS feature in the GTN. 

NOTE

For first time TAWS enablement, refer to the GTN 6XX/7XX AML STC IM, P/N 190-01007-A3, 

for additional requirements and checkout procedures. This manual only describes the 

necessary steps to re-enable the feature for existing installations.

1. Turn the GTN off by pulling the NAV/GPS circuit 

breaker.

2. Remove the database SD card from the SD card slot 

and insert the TAWS Enablement Card,

P/N 010-00878-01, that was used at the initial 

installation.

3. Enter configuration mode by applying power (closing 

the circuit breaker) to the GTN while holding the 

HOME key.

4. Go to the Terrain Configuration page from the GTN 

Options page. Touch the TAWS B key.

When the TAWS feature is activated, the TAWS B key will be 

lit green, as shown in Figure 3-13.

NOTE

The feature enablement card should be provided to the 

customer after service has been completed.

3.4.4.1.1

TAWS-B Configuration Options

When TAWS-B is enabled as shown in Figure 3-13, the following configuration settings may be accessed:

TAWS Audio

This configuration setting allows the user to select aural alert messages for various caution and warning 

types.

Airport Criteria

The GTN TAWS alerting algorithm adapts the terrain alerting criteria based on nearby airports. The 

Airport Criteria configuration options allow the user to select the minimum criteria that the airport must 

meet to be considered as a nearby airport for the purpose of TAWS alerting. See Section 7.5.1 for more 

details.

Figure 3-13. GTN 7XX TAWS 

Configuration Page