Airplane Flight Manual Supplement or Supplemental Flight Manual for the NGT-9000
Revision 4 Issue:
9/19/17
Page 24 of 27
Document Number L3-76AK-AFMS1
FAA Approved
Table 3-1: Troubleshooting for the Panel Mount NGT-9000
Symptom
Screen
Cause/Corrective Actions
•
ADS-B Out Fail lamp
flashes (1 second
On/Off) for 2 minutes,
and then remains ON
indefinitely until a GPS
position is acquired.
•
Compatible displays may
indicate “STANDBY” or
"DATA-FAIL" and WI-FI
information is not
available.
Weather
GPS is Acquiring (In Air – no previous position fix).
1. The GPS may need up to 4 minutes to provide a
position after power is applied to the unit.
2. The GPS signal may be weak. Move the aircraft into
an area where the unit can acquire the GPS signal.
3. Cycle power to the unit.
Contact L3 Field Service before removal of unit.
•
Display indicator MAP
FAIL (red text) showing
on FIS-B application
screen.
•
ADS-B Out Fail lamp is
Flashing (1 second
On/Off) for 2 minutes and
then remains ON.
•
Compatible displays may
indicate “STANDBY” or
"DATA-FAIL" and Wi-Fi
information is not
available..
Weather
GPS-Acquiring previous (position fix – On Ground or In
Air) This means only GPS data is not available however,
the GPS position was available once during this power
ON or it is shown when a fault is detected that prevents
the FIS-B data from showing on the screen.
1. The GPS signal may be weak. Move the aircraft
into an area where the unit can reacquire the GPS
signal.
2. Cycle power to the unit.
3. Possible problem with L-Band antenna or internal
hardware.
4. Check System Status Messages.
5. Check the Lynx MAT fault log.
6. Observe the GPS Receiver Information using the
Lynx MAT (Service – GPS) for correct signal
strength. Verify that the signal bars are showing at
least 40 -50% in the GPS Receiver Information
Packet. If this is not the case, then check if the
antenna cable loss is more than 10 dB.
7. Check if 12V power is available at GPS antenna
port, when the unit is powered ON.
Contact L3 Field Service before removal of unit.
•
Display indicator TAWS
UNAVAILABLE (White
text) showing on TAWS
screen.
•
MSG button on screen.
TAWS
Displayed when TAWS is not available.
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 TAWS
FAILED (Amber text)
showing on TAWS
screen.
•
MSG button on screen.
TAWS
Displayed when TAWS is Failed.
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.
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