Appendix - Failure Indications
Unhealthy Sensor
Map monitors the "health" of the sensors (traffic and lightning) by means of a signal
pulse. Map looks for a signal every three seconds from each sensor. If it doesn’t see
this signal it assumes the sensor has failed in some way. When this happens, the
following occurs on the display:
• Sensor data is removed from the overlay display.
• The word "FAIL" is displayed in the sensor's status line in yellow.
• The sensor symbol changes from cyan to yellow (if the sensor was on).
Recommended course of action:
• Select the Setup Page and perform Self-Test for the applicable sensor.
CMOS Battery Failure
In the event of an internal battery failure, the following message will occur after
system start-up:
WARNING: Check system time. Check database expiration date. Press any
bezel key to continue.
This message indicates that the internal battery that maintains system date and time
settings has failed, in which case the following system defaults are used:
Date - Jan 01, 2000
Time- 00:00:00 (local)
These defaults will be overridden when GPS date and time are sent to the MFD via
ARINC 429 from the GPS navigator.
This message alerts the pilot to check the navigation database expiration date and verify
that the database has not expired, since the system will not automatically recognize it.
The system should be returned to Avidyne for CMOS battery replacement.
Engine DAU Failure
In the event of an engine data acquisition unit (DAU) failure, any affected indicators
will show a failure indication by:
Dial Gauges: Needle Pointer removed
Numeric Readouts: Displayed as three white dashes
Bar Graphs: Disappear
Recommended Action: For failure of single indicators, land as soon as practical and
consult a maintenance facility. If all indicators have failed, check and/or cycle the
circuit breaker for the engine DAU. If the function is not restored, land as soon as
practical and have a maintenance facility inspect the system.
600-00105-000 Rev 01
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FlightMax EX5000
