Got it installed and have completed the alignment procedure. The on-screen instructions did not mention facing north - simply Taxiing in a complete circle. I did get the "Alignment Complete press return" message and the "Magnetometer Align" message is now gone. Still getting the "Aiding Disabled" message on the screen - even after power-down and restart.
I don't recall seeing anything in the manual about other reasons for aiding disabled messages.
I'll try flying it.
Flew it - "Aiding Disabled" went away shortly after take-off. Came back after I landed though. Maybe it needs something to aid.... Seems to work correctly - including driving the S-Tec 30 Autopilot through the GPSS coupler.
Would still like to know if this is the correct behaviour
Thanks in advance,
Ralph