Taws Functional Check - Garmin G1000 Nxi System Maintenance Manual

TAWS Functional Check

Functional Check for TAWS-B
1. With the G1000 in Normal Mode, use the GCU FMS knob to select the Map group and
TAWS page on the MFD.
2. Verify that the title at the top of the page reads "Map – TAWS-B Map".
If TAWS has not been enabled, the title will read "Map – Terrain Proximity" or
"Map – Terrain". Refer to Section 3.9.6 for TAWS B Configuration for enabling this
feature.
3. Press the GCU MENU button and select "Test TAWS System" from the pop-up menu.
Verify TAWS test annunciation is displayed on the MFD and both PFDs.
4. After the TAWS test has completed, verify that "TAWS System Test Okay" is heard over
the cockpit speaker (if selected) and the headsets.
5. Press the GCU MENU button again and select "Inhibit TAWS" from the pop-up menu
and press ENT on the GCU. Verify "TAWS INH" is displayed on PFD 1 and PFD 2.
6. Press the GCU MENU button again and select "Enable TAWS" from the pop-up menu
and press ENT on the GCU. Verify the "TAWS INH" annunciation on the PFDs has
extinguished.
7. With a GPS position acquired, shield or disconnect the GPS antennas to remove the
GPS signal. Verify "LOI" shows on the MFD and the "TAWS N/A" and "LOI"
annunciations show on the PFDs.
8. Reconnect or remove the shield from the GPS antennas, and verify the MFD "LOI"
indication and PFD "TAWS N/A" and "LOI" annunciations are removed once the GPS
satellites are acquired.
9. Pull PFD1 PRI and PFD1 SEC circuit breakers. Re-power PFD1 in configuration mode,
and use the PFD1 FMS knob to select the System Audio - Audio Alert Configuration
page.
10. Ensure cockpit speaker is selected ON. Use the PFD1 FMS knob to highlight each of the
following messages then select PLAY. Verify each of the following audio messages are
played:
•
Too Low Terrain
•
Sink Rate
•
Pull Up
•
Don't Sink
•
Five Hundred
•
Caution, Terrain (2X)
•
Terrain (2X), Pull Up (2X)
•
Caution, Obstacle (2X)
•
Obstacle (2X), Pull Up (2X)
•
Terrain Ahead (2X)
•
Terrain Ahead, Pull Up (2X)
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
NOTE
Page 344
Revision 1