The regulation encouraged this how? Do you have an example? Model doesn't matter. It's possible to have two different models with the same type rating (Airbus

The regulation encouraged this how? Do you have an example? Model doesn't matter. It's possible to have two different models with the same type rating (Airbus A320 vs A340), and it's just as possible to have a derivative that requires a different type rating. It would have been better for whom to treat the MAX as something different, requiring its own type rating? It's pretty clear it was overwhelmingly the airlines who wanted a new 737 in the existing 737 type rating.