> It pointed out that those problems have less to do the certification of the design and more to do with a manufacturing defect.
You might really enjoy a book called the The Design of Everyday Things by Don Norman. He covers your comment here in detail.
One of his key insights is that "human error" are far too often weasel words that prematurely end a conversation (or investigation) into root cause. He goes on to detail a whole tree of "human error" so we can speak about mistakes, lapses, and errors that humans make.
The meat of his point is that some types of human error are very hard to design out of your system, but _many_ types of human error can and should be expected by the designer (or engineer), and appropriately handled.
In this instance, if a human (or perhaps a few) can make a single error when affixing the door plug to the aircraft, like improperly torquing a bolt. And that simple error risks a catastrophic loss of the airframe, then you probably have a _design_ issue and not a "manufacturing issue caused by human error".
You might really enjoy a book called the The Design of Everyday Things by Don Norman. He covers your comment here in detail.
One of his key insights is that "human error" are far too often weasel words that prematurely end a conversation (or investigation) into root cause. He goes on to detail a whole tree of "human error" so we can speak about mistakes, lapses, and errors that humans make.
The meat of his point is that some types of human error are very hard to design out of your system, but _many_ types of human error can and should be expected by the designer (or engineer), and appropriately handled.
In this instance, if a human (or perhaps a few) can make a single error when affixing the door plug to the aircraft, like improperly torquing a bolt. And that simple error risks a catastrophic loss of the airframe, then you probably have a _design_ issue and not a "manufacturing issue caused by human error".