https://en.wikipedia.org/wiki/Air_India_Flight_2379

The cascade of fault warnings as recorded by the digital flight data recorder, all of which occurred within a minute,[4] involved the three multiply redundant hydraulic systems, elevator flight-controls, autopilot disconnection, an emergency exit door, and even an engine anti-ice warning.[5] The Airbus A320 has three independent hydraulic systems, coded blue, green, and yellow, such that the loss of all three is considered by experts to be virtually impossible. (Too, this aircraft make and model is the one of the most flown globally.)[6] For approximately four seconds all hydraulics control was actually lost.[7][8]

  • Em Adespoton@lemmy.ca
    30·
    4 days ago

    If they know exactly why it happened and the probability of it happening again is within tolerance, there’s no reason to ground the entire fleet.

    • seathru@quokk.auEnglish
      201·
      4 days ago

      "Now, should we initiate a recall? Take the number of vehicles in the field, A, multiply by the probable rate of failure, B, multiply by the average out-of-court settlement, C. A times B times C equals X. If X is less than the cost of a recall, we don’t do one.?

      • Lupus108@sh.itjust.works
        5·
        4 days ago

        A “normal accident” is an emergent disaster, arising from a complex and highly technical system whose components are tightly coupled, meaning that the state of one component significantly affects others. Perrow wrote that in simple mechanical systems, a high degree of reliability can be achieved through the use of independent and redundant components, but as system complexity increases, especially when human organizations are involved, true redundancy among the components ceases to exist, and failures or errors may trigger a “cascade” that propagates through the system until disaster occurs. Cascades are, by their very nature, difficult or impossible to fully predict until they occur.

        • Admiral Cloudberg paraphrasing Charles Perrows 1984 book ‘Normal Accidents’
      • Pzulu@lemmy.world
        5·
        4 days ago

        Hey, you were told in no uncertain terms, first rule is we do not talk about recalls.