Lack of redundancies on Boeing 737 MAX baffles some involved in developing it

Boeing has been working to rejigger its MAX software in recent months, and that includes a plan to have MCAS consider input from both of the plane’s angle-of-attack sensors, according to officials familiar with the new design. (Dimas Ardian / Bloomberg)

Pilot perspective

Matt Menza, a former Boeing pilot who worked on the MAX, said that during flight testing of planes ready for delivery, he wasn’t aware of any events that indicated a problem with the stall warning or the MCAS system. (Dimas Ardian / Bloomberg)

Boeing told The Times Tuesday that the company’s internal analysis determined that a pilot would be able to counteract an erroneous command by using trim switches on the control column, or by following the standard checklist to use cutoff switches that would have turned off all automatic movement of the horizontal tail.

Source: www.seattletimes.com