The main bug was: * each flight computer used its own angle of attack sensor with no way to detect failure. Craft had 2 sensors, but they were not used togethe

The main bug was: * each flight computer used its own angle of attack sensor with no way to detect failure. Craft had 2 sensors, but they were not used together (apparently that was extra paid option...) * pilots didn't know how the system worked or when it is active, so they were fighting against it don't remember anything about overflow