Boeing released the NG to further improve fuel performance, variety, and passenger capacity, although also responding to climbing competition in the Airbus A320. Having said that, MCAS became notorious for its function in two deadly accidents on the 737 MAX, which killed all 346 travellers and crew on equally flights. https://ourbabygirlmemorybook51395.theobloggers.com/42832106/737-cash-an-overview