4 ms·

this article came a month back: https://www.nytimes.com/2019/02/03/world/asia/lion-air-plane-crash-pilots.html https://www.nytimes.com/2019/02/03/world/asia/lio

• AnssiH 8y ago
  The most interesting tidbit for me was: > Boeing decided to feed M.C.A.S. with data from only one of the two angle of attack sensors at a time, depending on which of two, redundant flight control computers — one on the captain’s side, one on the first officer’s side — happened to be active on that flight.
  • leemailll 8y ago
    that’s unbelievable, it clearly disobey the redundancy in the design of plane.
    • michaelt 8y ago
      The theory is if one computer fails due to bad data from a faulty sensor, you've got another computer ready that hasn't seen said data [1]. It'd be pretty bad if bad data from a single sensor broke both computers at the same time. Obviously, the Lion Air flight did crash, so this no longer seems like such a wise design. [1] https://news.ycombinator.com/item?id=19077351 https://news.ycombinator.com/item?id=19077351