Airplane Flight Manual Supplement or Supplemental Flight Manual for the NGT-9000
Revision 4 Issue:
9/19/17
Page 25 of 27
Document Number L3-76AK-AFMS1
FAA Approved
Table 3-1: Troubleshooting for the Panel Mount NGT-9000
Symptom
Screen
Cause/Corrective Actions
•
Display indicator
TERRAIN DISPLAY
FAILED (Amber text)
showing on TAWS
screen.
•
MSG button on screen.
TAWS
Displayed when an alert fault causing loss of terrain
display. Alerting is still operational.
1. Cycle power to the unit.
2. Check System Status Messages.
3. Check the Lynx MAT fault log.
Contact L3 Field Service before removal of unit.
•
Display indicator
Lightning Failed (amber
text) showing on
Lightning screen.
Lightning
Displayed when Lightning detection is not available.
1. Cycle power to the unit.
2. Cycle power to the WX-500.
3. Check System Status Messages.
4. Check the MPC (MAT) fault log.
Contact L3 Field Service before removal of unit.
•
Heading shows “- - -“ on
Lightning screen.
Lightning
Heading input is missing.
Cycle power to the unit.
1. Verify “STAB” is set to “ON” (See lightning setting
page)
2. Cycle power to the WX-500.
3. Check System Status Messages.
4. Check heading source for failure.
Contact L3 Field Service before removal of unit.