Tonight was spent testing some AFCS mods, aiming on making the autopilot more responsive, and to test the the “phantom” auto-throttle issue was resolved.
The first part of the flight: Testing the AFCS tuning went well, with the aircraft being much more responsive and predictable. But it showed a problem with the AFCS mode switching, and the auto-throttle issue reappeared. The good thing about the autothrottle issue was that I proved that it was not related to the HUD/UFC software as I had previously suspected. After figuring what had caused the issue I was able to disable the autothrottle and land safely.
I have to re-think my AFCS implementation. At the moment I am using MobiFlight for all my autopilot functions, I may end up shifting the mode switches to a BBI32, and driving the switches directly from FSUIPC.
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