Spot on Volume.
Just out of curiosity , has there ever been another serious incident/accident to the T7 because of the auto throttle misunderstanding ?
There have been many incidents. At my airline, I know that they've had several on the 777 just like Asiana. The only difference being that crews caught their mistake early on.
Even the regulator suffered from this FLCH trap during a certification flight on the 787, with the same logic. Boeing chose to ignore the recommendations as a result of that incident claiming that the FCOMs covered such a trap with sufficient clarity (even though it was more emphasised on the 787 FCOMs)
As much as I believe the crew in the AAR accident were incompetent, having 10K hours in 747s I personally think there is room for improvement in the automatics.