ICON A5 MM : Instruments (and Avionics) : Troubleshooting : Magnetic Direction Indicator Calibration
Magnetic Direction Indicator Calibration
100399-01
The following directions should be used to calibrate the magnetic direction indicator of the A5.
Applicable Aircraft Serial Numbers
All
Type of Maintenance
Line
Level of Certification
Owner/Pilot
Task Specific Training Required
No
Special Tools Required
None
Parts Required
None
Aircraft System and Number
10—Instruments (and Avionics)
Safety Equipment
As Needed
Consumables
None
The magnetic direction indicator is part of the attitude indicator (AI), which is located in the center of the flight instrument cluster.
If the magnetic direction indicator becomes erratic, when deviations in the heading are noticed, or due to new electrical interference, the instrument can be re-calibrated.
Note:
See KMC Publication No. 1404, KMC 2000-2, Digital Attitude Indicator Operation Guide for troubleshooting information.
Task Instructions
1. Proceed when in flight and at least 3 minutes from turning on the instrument.
2. Press and hold the two buttons at the same time until the message “Gathering Mag Data” is shown on the display (approximately 10 seconds).
Note: 
The display will rotate through the 3 screen modes until the message appears. The operation resets any previous compensation and the instrument begins to gather data for 10 minutes to perform the magnetic compensation.
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 indication.
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.
The instrument performs a self-test following calibration. If any error is found a red “X” will appear on the display. Troubleshoot by performing the calibration a second time. If the calibration does not rectify the condition, replace the attitude indicator. See Replace Instrument Panel Gauges.
Note:
The “X” can appear during a flight if the equipment detects an error. The pilot can recalibrate the unit during flight.