Installation Manual

Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Maintenance Page 4-6
Table 4-1: Troubleshooting The Panel Mount NGT-9000
SYMPTOM
SCREEN
CAUSE/CORRECTIVE ACTIONS
• Display indicator TAS ONLY
or TCAS ONLY
(Models with
TAS/TCAS
only) showing on
traffic screen.
• MSG button on screen.
Traffic A traffic mode indicator that is shown when TAS/TCAS is in
operation but ADS-B traffic information is not available
1. The TAS/TCAS is operational but ADS-B Data is not
available e.g. on the ground with no heading or track
input (track invalid when ground speed is < 7kts).
2. Check System Status Messages possible for cause of
loss of ADS-B data.
3. The GPS is failed (GPS has not acquired).
4. Possible problem with L-Band antenna or internal
hardware.
5. Cycle power to the unit.
6. Check the MPC (MAT) fault log.
7. Contact ACSS Field Service before removal of unit.
Display indicator TAS/TCAS
STBY (Models with TAS/TCAS
only) showing on traffic screen.
Traffic A traffic mode indicator that is shown when the TAS/TCAS
system is in standby.
1. This is a normal condition when the aircraft is on
ground.
2. If the indication is seen during flight. Contact ACSS
Field Service before removal of unit.
• Display indicator TRAFFIC
FAILED (Amber text)
showing on traffic screen.
• MSG button on screen.
Traffic Displayed if both ADS-B and TAS/TCAS (optional) have
failed.
1. Cycle power to the unit.
2. Check the secondary equipment (antenna) for
problems. (May need to calibrate Directional antenna.)
3. Check System Status Messages.
4. Check the MPC (MAT) fault log.
5. Contact ACSS Field Service before removal of unit.
Display indicator TRAFFIC
UNAVAILABLE (Amber text)
showing on traffic screen.
Indicates both TAS/TCAS and
ADS-B traffic sources are not
available for a variety of
reasons: However, both are not
failed. If all available traffic
sources are unavailable due to
failure, ‘Traffic Failed’ will be
indicated.
This will be the normal
indication for units on the
ground with no heading input.
(TAS/TCAS in standby).
Traffic
ADS-B is operational but heading and track are invalid or
GPS is failed. TAS/TCAS is in Standby.
Transponder Mode Control is “ON” which inhibits the display
of relative altitude so traffic is unavailable.
1. This is normal operation if the aircraft is less than 14
knots, TAS is not installed or in standby and there is no
heading input. Check traffic display in Ground Test
mode or at speeds greater than 7 knots.
2. View the GPS page under the information button and
verify GPS is operational. If not, check the GPS
antenna location and ensure that the aircraft is not
inside the hangar or repeater is on if inside the hangar,
GPS antenna is exposed to clear sky.
3. Cycle power to the unit.
4. Check the GPS antenna for problems.
5. Check System Status Messages.
6. Check the MPC (MAT) fault log.
7. Contact ACSS Field Service before removal of unit.