Brief Description: Calibrate the electronic compass
I wanted to get out of the hangar with the plane and proceeded to drag it over to a local pad and swing the Garmin AHADRs magnetometer per Garmin's proceedure. Set ups the plane pointing North, and then run the calibration procedure by rotating the plane 30 deg at a time and waiting for the cal process to work.
Successful! Now all the synthetic vision and AP stuff works because it has a heading reference.
