Given that it didn't work, there's no question that additional training will be required. The question is the nature of the training. If they fix MCAS, the trai

Given that it didn't work, there's no question that additional training will be required. The question is the nature of the training. If they fix MCAS, the training will be how to recognize and compensate for a failure. If they removed MCAS, it will be how to fly the plane with different characteristics. It's unclear to me how much difference there would be in FAA approval between the two.