On the new game world Ellinikon, I operate 5 Boeing 737-900 HGW which are about 13 years old. The configuration is Y174 (Lesuire) C 15 (Recliner Long Haul). 189 seats which is my seating configuration is also the maximum which interests me. I would think the aircraft would have 200 seats in a standard 1 class configuration but I checked it out and only 189 (same with slimline HD) with a lot of space left over.
Why is there a maximum seating capacity of 189 seats when there is space to use. However I know beoing have this as their maximum as well.