As stated in my previous post, the MCAS system (software and hardware), which was implemented in the new MAX so it would present the same flying characteristics as the previous generation of 737s, had serious design flaws. The reason for wanting similar flying characteristics was to reduce training requirements for the new MAX. The reason the MAX has different flying characteristics than previous 737s is because of a change in the engine mounting location to accept the newer, more efficient Leap engines. The difference in flying characteristics is that the MAX will tend towards a higher angle of attack under certain circumstances. The nature of the design flaw was MCAS would essentially over correct the trim, repeatedly, when the angle of attack sensor was faulty. MCAS would try to bring the nose down when it sensed too high of an angle of attack. The MCAS system has been modified (software changes and use of redundant angle of attack sensors) to prevent the situations that resulted in 2 crashes and the plane has received new certifications from the FAA and ESAS.
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Originally Posted by New Englander
Okay, can someone explain to me in a simple way what is the design flaw of the 737 Max?
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