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Summary of User Option Menu items and their function:
•
Time Format
•
Time Set
•
Date Set
•
Display Seconds Enable display of seconds (on/off) for Clock and Flight Timer
•
GPS Sync
•
Timers
5.1
CONFORMANCE
For standard conformance items such as qualification levels and software updates, please refer
to the IM.
5.1.1 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
No periodic scheduled maintenance or calibration is necessary for continued airworthiness of
the MD23 Custom Function Display, unless specified in the aircraft maintenance procedures.
The unit display can be cleaned using a lint-free cloth moistened with water. No chemicals
should be used to clean the display.
If the unit fails to perform to specifications, the unit must be removed and serviced by Mid-
Continent Instruments and Avionics or their authorized designee. Other than software or CID
version updates, there are no repairable parts or processes available to be performed in the
field.
Mid-Continent Instruments and Avionics
Set 12 or 24-hour time display; applies to Local Time only
Set UTC and Local Time
UTC can be set as an offset to GPS time or independently when Sync
is not on/available
SYNC UTC resets UTC to GPS time (if available)
Set date
Sets GPS Sync to on or off; if available
Displays Run timer (total power-on time of the unit)
Displays Hobbs timer (if enabled via external signal)
11
MD23-190
User Guide
User Guide UG190, Revision 2
January , 2021
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