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View Diary: Engineer on 787 electrical system fired for pointing out flaws (86 comments)

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  •  I wouldn't worry about differences among (10+ / 0-)

    design stage drawings without more information. For example, were any of them used in creating production examples, or were they all just the kind of drawings used to circulate ideas during the design stage for meetings, etc. If they were actually used for production, that would be a different story.

    I once used drawings for a facility that had been designed to house crews for nuclear powered airplanes (at Test Area North on the Idaho National Laboratory) but had long since been repurposed for other things. We just ignored the crew quarters shown in one building on some drawings used for purposes in which that part of the building was irrelevant, and which had been kept up to date in parts that we cared about for our project.

    Moderation in most things.

    by billmosby on Fri Jan 18, 2013 at 04:34:53 PM PST

    •  still waiting for that INL diary, Bill (4+ / 0-)

      Pretty please?

      All things in the sky are pure to those who have no telescopes. – Charles Fort

      by subtropolis on Fri Jan 18, 2013 at 05:57:17 PM PST

      [ Parent ]

      •  Ok, but it will have to wait until... (1+ / 0-)
        Recommended by:

        a) I get my iMac back from the Apple store at City Creek mall in  SLC (the graphics card blew up today)

        b) I get through with my webmaster-related duties, truck driving, and scenery assembling duties for the Little Red Riding Hood ride in June

        c) I actually remember what all I did. Well, ok, what I did to an extent that would fill a diary, and then do it all over again at intervals until I either fill about 30 diaries or people lose interest, lol.

        Moderation in most things.

        by billmosby on Fri Jan 18, 2013 at 09:08:14 PM PST

        [ Parent ]

        •  no pressure (0+ / 0-)

          I'm just gobsmacked that someone who worked there back then posts here now.

          In fact, i'm pretty amazed at the experiences of some of you. Holy moly!

          All things in the sky are pure to those who have no telescopes. – Charles Fort

          by subtropolis on Mon Jan 21, 2013 at 07:40:27 PM PST

          [ Parent ]

    •  Not in a manufacturing environment (9+ / 0-)

      Prints and specs are part of the contractual agreement between customer and supplier, and the consequences for making unapproved changes, even in early design phases for a component supplier like this, can be dire. Especially if there is product liability or extensive redesign cost involved.

      If Boeing could prove this supplier made unauthorized changes to a component, they could probably stick the supplier with the total bill for any corrective action, and might even be able to win damages in court for lost sales or reputation.

      Virtually every aerospace/avionics purchase order (PO) requires a Certificate of Compliance/Conformance (CofC) from the supplier, where the supplier swears the product conforms to applicable drawings and specs - the revision numbers are usually in the PO. On military systems, people get sent to prison for falsifying this stuff.

      You're describing what amounts to interior decorating in your example. Imagine doing the same thing with the systems for a nuclear reactor without obtaining the necessary engineering and regulatory approvals.

      In Soviet Russia, you rob bank. In America, bank robs you.

      by badger on Fri Jan 18, 2013 at 08:28:41 PM PST

      [ Parent ]

    •  This is different than archichecture (3+ / 0-)

      Design drawings for electrical components are an entirely different beast, since electrons don't "know" which room they are supposed to go into or what parts of the diagram they can ignore.   Any electrical design company should have a very rigid and formal change control and revision control system in place -- and I would imagine it goes double for any aerospace company.    Production plans, test plans, certification, and a whole bunch of other stuff depends upon those drawings and if they are not consistant you are at least wasting a lot of time, and at worse doing an external design review on a product that doesn't actually exist.   "Oh, I thought that the device was internally fused, so I don't have a fuse on this bus..."

      I don't know whether this guy was flailing at straws, but it does open a door into a company that had at least one engineer who was a bit "off."

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