G1000/GFC 700 Post Installation Checkout Procedure – Hawker / Beechcraft King Air C90
Page 3-27
190-00682-00
Revision 5
3.16
TAWS Functional Check
1. From the MAP group, select the
TAWS
page on the MFD.
2. Verify that the title at the top of the page reads “
MAP – TAWS
”.
Note: If TAWS has not been enabled, the title will read “
MAP – TERRAIN PROXIMITY
” or “
MAP –
TERRAIN
”. Refer to section 2.12 for TAWS enabling procedures.
3. Press the GCU
MENU
button and select “
Test TAWS
” from the pop-up menu.
4. After the TAWS test has completed, verify that “TAWS System Test Okay” is heard over the
cockpit speaker.
5. Press the GCU
MENU
button again and select “
Inhibit TAWS
” from the pop-up menu and press
ENT
on the GCU. Verify “TAWS INHB “ is displayed on PFD1, PFD2 and MFD.
6. Press the GCU
MENU
button again and select “
Enable TAWS
” from the prop-up menu and press
ENT
on the GCU. Verify the “TAWS INHB” annunciation on the PFDs and MFD has
extinguished.
7. With a GPS position acquired, shield or disconnect the GPS antennas to remove the GPS signal.
Verify “
DR
” shows on the MFD and the “
TAWS N/A” and “DR
” annunciations show on the PFDs.
8. Reconnect or remove the shield from the GPS antennas, and verify the MFD indication and PFD
annunciations are removed.
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 can be
played:
PDA – Caution: Too Low Terrain
EDR – Caution: Sink Rate
EDR – Warning: Pull Up
NCR – Caution: Don’t Sink
VCO – Caution: Five Hundred
RTC – Caution: Caution, Terrain (2X)
RTC – Warning: Terrain (2X), Pull Up (2X)
ROC – Caution: Caution, Obstacle (2X)
ROC – Warning: Obstacle (2X), Pull Up (2X)
ITI – Caution: Terrain (2X)
ITI – Warning: Terrain (2X), Pull Up (2X)
IOI – Caution: Obstacle (2X)
IOI – Warning: Obstacle (2X), Pull Up (2X)
11. Pull the PFD1 PRI and PFD1 SEC circuit breakers, and re-power PFD1 in normal operating
mode.
