INSTRUMENTS (AND AVIONICS) / TROUBLESHOOTING 13-9
CHANGE C2 ICON A5 / MAINTENANCE MANUAL
3. During the 10 minutes the instrument is gathering data, perform two standard 360° degree turns
to the right and two standard 360°turns to the left.
4. When the 10 minutes is over, the instrument will show the message “Mag Data SAVED”.
5. The message will remain visible until the instrument has been restarted. While still flying, pull
INSTR 1 fuse, pause, then re-insert.
NOTE: During the re-calibration process, the instrument could behave
erratically and should not be relied on for accurate directional indi-
cation.
6. The instrument is now calibrated for the magnetic field of the aircraft. When INSTR 1 fuse is
pulled, all gauges on the instrument panel will be INOP.
7. Compare magnetic direction indicator heading to GPS mag track.
VERIFICATION METHOD:
The magnetic direction indicator is considered calibrated when the AI heading and the GPS mag track
are in alignment.
13.2.4 Annunciator Panel Diagnostic
This table explains how to decode the annunciator panel indicators. The indicator light illuminated is
shown in column 1, the possible cause in column 2, and the remedy is given in column 3.
Trouble Light Possible Cause Remedy
ENGINE
LANE A minor fault.
LANE B minor fault.
LANE A & B minor faults.
Retrieve and review ECU data. See
“ECU Troubleshooting” on page
16-9.
LAND AIRCRAFT
+
ENGINE
LANE A or B major fault.
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