89000109-002
xVue Touch Installation Manual
Rev 2
Page 8-15
© Honeywell International Inc. Do not copy without express permission of Honeywell.
For Use in Non-Certified Aircraft
After power up, the KG
71EXP provides all air
data, but no attitude
data and no heading
information.
HG 1120 Status Check
fails.
7
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
The KG 71EXP complete
data loss (attitude,
heading, air data) during
flight is reported.
Electric power failure.
NA
• Check the KG 71EXP circuit breaker.
• Check the KG 71EXP power wiring
including the KG 71EXP connector.
• If power installation is correct, restart
the KG 71EXP. If problem persists,
replace the KG 71EXP unit.
Hardware watchdog
resets processor.
NA
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
Loss of attitude data and
heading data during
flight is reported.
HG 1120 CBIT detects a
failure.
7
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
HG 1120 SPI
Communication CBIT
detects a failure.
8
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
Excessive rate (over 250
degrees/seconds)
detected.
13
• This event may happen during high
rate aerobatic maneuvers. If the even
happen during regular flight and
occurs randomly under normal flight
conditions (not aerobatic), then
replace the KG 71EXP unit.
Loss of airspeed data
during flight is reported.
Differential Pressure SPI
Communication
Integrity CBIT detects a
failure.
11
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
Loss of altitude data
during flight is reported.
Static Pressure SPI
Communication
Integrity CBIT detects a
failure.
10
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
Table 8-5 KG 71EXP Event Codes
System Behavior
Possible Root Cause
Event
Log
Code
Troubleshooting Action
