United is the North American launch customer for the 737 MAX 9. With this order the 737 MAX has more than 1,200 orders and commitments from 18 different customers. Counting all variants, the 737 family now stands at 10,039 orders.
The twin-engine 737 MAX, a new-engine variant of the popular 737 narrow-body passenger jetliner uses the CFM International LEAP-1B engine. Airlines operating the 737 MAX will see a 13 percent fuel burn improvement over today's most fuel efficient single-aisle airplanes, Boeing officials say.
The 737-900ER and 737 MAX 9 aircraft ordered by United Airlines can seat up to 180 passengers and feature the new Boeing Sky Interior. The interior includes modern lines, a cabin with more headroom and LED lighting that offers several different color options.