On March 4, Boeing reportedly had preliminary plans to ramp up production of the 737 MAX aircraft to about 47 a month by the end of 2023 as the company looked to extend its recovery from successive crises. Boeing 737-9 flight tests were scheduled to run through 2017, with 30% of the -8 tests repeated; aircraft 1D001 was used for auto-land, avionics, flutter, and mostly stability-and-control trials, while 1D002 was used for environment control system testing. In November 2014, McNerney said the 737 would be replaced by a new airplane by 2030—probably using composite materials—that would be slightly bigger and have new engines, but would retain the 737's general configuration. However, costs have since risen significantly and the margin reduced following the two crashes, the FAA grounding, and the severe disruption to production. The MCAS software based flight control law was implemented to account for the undesirable aerodynamic changes.

Boeing planned to increase its 737 MAX monthly production rate from 42 planes in 2017, to 57 planes by 2019. The 737 MAX is based on earlier 737 designs, with more efficient CFM International LEAP-1B engines, aerodynamic changes including distinctive split-tip winglets, and airframe modifications. Indonesia's National Transportation Safety Committee released its final report into the crash on October 25, 2019, [233] attributing the crash to the MCAS pushing the aircraft into a dive due to data from a faulty angle-of-attack sensor. The rating agency also warned that the production halt would have wide and harmful impact to the whole aerospace and defense supply chain and the ramp-up would be slower than previously anticipated.As a result, the engines were mounted higher and further forward on the wings, changing the aerodynamic characteristics.

Witnessing Flymax’care for the production of cutting-edge products are the obtained high quality certification.The semi-levered landing gear design has a telescoping oleo-pneumatic strut with a down-swinging lever to permit 9. USDOJ prosecutors assert that the settlement is lawful because it cannot be proven that a crime was committed against the crash victims. After completing 2,000 test flight hours and 180-minute ETOPS testing requiring 3,000 simulated flight cycles in April 2017, CFM International notified Boeing of a possible manufacturing quality issue with low pressure turbine (LPT) discs in LEAP-1B engines. In September 2014, Boeing launched a high-density version of the 737 MAX 8, the 737 MAX 200, named for seating for up to 200 passengers in a single-class high-density configuration with slimline seats; an extra pair of exit doors is required because of the higher passenger capacity.