This quote is also from my addendum (supplement) to my first report:This item is not that major, unless you expect (BCA) to build conforming products to the fastener level, which I think you might. It illustrates again how screwed up (BCA) is to requirements that would allow us to build products with stable conformity from unit to unit. It mainly has an effect on inspectors like me, who actually inspect fastener installations, and who don’t like to guess what the configuration of the product should be when I inspect it: It has to do with the required head direction of fasteners, and the lack of definition of such by (BCA) drawings. (Design specification), section XX.X, states to not show fasteners in detail, and to add a head side direction required flag note if a specific head direction is required. Section XX.X.X. states to call out fasteners in one view only. (Design specification) section X.X. states drawings are the basic means of communication between Engineering and other organizations, and must be clear, concise, and subject to only one interpretation. (Design specification) section X. states to use (design specifications) two dimensional drawing standards except where Catia (design specifications) series standards identify departures. Catia design standards do not give any exceptions to the noted design standards. This mainly affects single pin joints per the following (engineering specification) section:
a. Bolts used in single pin joints or in control systems shall be installed with the heads (direction) or (direction), unless otherwise specified. All other bolts shall be installed with the heads (direction) or (direction) wherever practical.
These single pin joint fasteners are mainly used in engine mounts, and in links that support duct installations. It is shop practice to always put the nut and plain washer on the bushing side of the joint, regardless of the noted (specification) requirements. Most of our Catia drawings do show the bolts installed this way, and if they don’t, shop writes ELRs (Engineering Liaison Requests) to make them that way. There are no head side required notes per (the design specification requirements). The Catia drawings show the fasteners as gotten from the (Catia) repository, and these fasteners are practically shown in lifelike detail, bolt head and all. Therefore shop mechanics, and probably most inspectors, including, I know, (name), Customer Coordinator, think these fasteners must be installed as depicted pictorially on the Catia drawing, if they care about fastener installation at all. These Catia drawing(s) violate (design specification), section XX.X, that states to not show fasteners in detail, and (there) is no exception to this in the Catia design standards I am aware of. There is also nothing anywhere that states that fasteners must be installed in the direction depicted on the Catia drawing when they lack a head direction note, that I am aware of. So we are building these critical single pin joints by simply "tribal knowledge," and not any engineering requirement. And we are ignoring the only real engineering requirement we have, which is the noted section of (the specification) that states these types of fasteners shall be installed with the heads (direction) or (direction) (to prevent the (fastener) from falling out until the next maintenance check if the (fastener loosens)). I think we should ignore the head direction shown on the picture sheet, unless there is a required head direction note on the drawing, but I am a minority in that on these critical single pin joints. The part of the...spec section that states that all other bolts shall be installed with the heads (direction) or (direction) wherever practical is a joke, and shouldn’t even be in the spec. It is unenforceable by QA, even if the shop has a mile of room to install fasteners per the requirement.
The chances of an inspector, considering the corrupted state of our Quality System, being able to enforce this part of the section in such a case without being fired "for not supporting the delivery schedule," is about equal to the chance of you accidentally running over and killing the real Easter Bunny on Easter morning.
The Last Inspector