This, in turn, led to a loss of automated flight controls.

Questions arise over the mix of highly automated flight systems and the skills of pilots.

This in turn caused the automatic pilot and automated flight system to shut down, leaving the pilots to hand-fly the aircraft.

Faulty speed readings, apparently caused by ice, prompted erratic behaviour by the automated flight system.

Features such as the automated flight control, conversations that had different choices of responses, and sub-quests were abandoned.