Avionics System/Compass Disconnected

Cause:

1. It is a software issue
2. It is a hardware issue

Solutions:

1. Power cycle the aircraft.
2. Downgrade and reupdate firmwares.
3. Calibrate the compass.
4. Replace aerial electronics module, thermal conductive pad, and sealing ring.

Conclusion:

Typically is a quick fix unless there is permanent damage to the compass within the aircraft.