G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
Page 7-37
190-00716-01
Revision 1
7.17 TAWS Functional Check
7.17.1
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”.
NOTE
If TAWS has not been enabled, the title will read “MAP – TERRAIN PROXIMITY” or
“MAP – TERRAIN”. Refer to section 3.29 for TAWS Configuration for configuring
TAWS.
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 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)
•
Obstacle Ahead (2X)
•
Obstacle Ahead, Pull Up (2X)
11.
Pull the PFD1 PRI and PFD1 SEC circuit breakers, and re-power PFD1 in normal operating mode.
If no other service is to be performed, continue to the return-to-service checks in Section 8.
Summary of Contents for Cessna Caravan G1000
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