On March 11, before the grounding of the 737 MAX, Boeing outlined “a flight control software enhancement for the 737 MAX,” that it’s been developing since soon after the Lion Air crash. Addressing the media on the eve of the Paris Air Show and for only the second time since the . second crash of the 737 Max in March, Dennis Muilenburg said Boeing’s communications were an area What We Found While FAA and Boeing followed the established certification process for the 737 MAX 8, we identified limitations in FAA's guidance and processes that impacted certification and led to a significant misunderstanding of the Maneuvering Characteristics Augmentation System (MCAS), the flight control software identified as contributing Technical Description. MCAS (Maneuvering Characteristics Augmentation System) is implemented on the 737 MAX to enhance longitudinal stability characteristics with flaps up and at elevated Angles of Attack (AoA). The MCAS function commands nose down stabilizer to enhance pitch characteristics during steep turns with elevated load factors and The fact is that the Boeing 737 MAX without MCAS is not an extremely unstable product as Figure 4 shows, but it does not have desired handling qualities and would not be certified without MCAS due Boeing has completed the critical design review of an enhanced angle-of-attack (AOA) system for the 737 MAX and will flight-test the improvements on the stretched 737-10 variant in 2022. Faulty Boeing designed the 737 Max 8 to be similar enough to existing 737s that it could keep the same “type rating”—meaning, The task of reviewing the safety of the MCAS fell to Boeing. In 2019, the pilots of Ethiopian Airlines Flight 302, also a 737 Max, attempted to counteract the effects of MCAS but could not physically move the mechanical trim wheel due to the aerodynamic force from plunging toward the ground. Boeing in January agreed to pay $2.5bn to settle criminal charges arising from the two fatal 737 Max crashes. The blPIUu.

boeing 737 max 8 mcas problems