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   Boeing denies that already November 2016 errors in the MCAS of the 737 MAX   
   came to light during a simulator test. An internal memo, published Friday, in   
   which a test pilot shares his concerns about the behavior of the system with a   
   colleague, according to Boeing related to malfunctioning simulator software.   
       
   The publication of the internal communication message caused a lot of   
   indignation among congressmen, pilot unions and experts, but according to   
   Boeing there is a wrong interpretation. The aircraft manufacturer said in a   
   statement that he regretted that a clear explanation was missing when the   
   message was released to researchers earlier this year.   
       
   Boeing says to have contacted test pilot Mark Forkner, who has since left, who   
   refuses to talk to Boeing. But through his lawyer, Forkner said his comments   
   were a reaction to the malfunctioning simulator program for the 737 MAX. That   
   program was tested at the time.   
       
   Serious problems with the Maneuvering Characteristics Augmentation System   
   (MCAS), a software part of the flight control system, led to fatal crashes   
   with 737 MAX aircraft from Lion Air and Ethiopian Airlines at the end of 2018   
   and the beginning of 2019. The worldwide MAX fleet has been on the ground   
   since mid-March, awaiting certification of adjustments with MCAS.   
      
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