Superceding Drawings

[REDesigner09]

Hi Everyone,

I have casting & machine drawing that was created some time a go & uses Y14.5- 1982 standards. With these drawings, there is clear evidence that callout letters were used twice for two different section views. Additionally, some views have a section view with multiple other section callouts in it, as well as quite a few other isssues. I'm going through the process to try to clean up these drawings & hopefully, at the same time, develop some standards.

I think the best approach is to supercede these drawings with new drawings & I'm assuming with new drawing numbers. However, we still need to track or document changes.

I don't necessarily want to create a huge Was / Is document. Is there a way to provide a generalized document, stating something to the affect:

"Existing drawings does not meet current ASME Y14.5 Standards and was updated with Drawing ###"?

Would something like this be compliant for FAA regulations or do I need to create a Was / Is document?

Thanks

 

[ctopher]

To make it clear without incident, make it a new part number, delete the old. You may also add a note to the new if you keep the old that it is "similar to" the old part number.

Chris
SolidWorks 10 SP4.0
ctopher's home
SolidWorks Legion

 

[looslib]

Two choices
One, revise old drawing noting supercedded by new drawing. On new drawing, note drawing was updated per ASME Y14.5-2009 and is similar to old drawing.
Two, revise old drawing and just note that it was updated per ASME Y14.5-2009.

Use option 2 if there is no form, fit or function change to the design and you need to maintain the part number for tracking and spares.
Use option 1 if you can use new part numbers and still have tracability.

I assume there is some purpose in cleaning up the old drawing besides just something to do. I worked with modifications on Lockheed P3 aircraft that the original drawings were done on the board and we didb't update the drawings to the latest standards just to make a replacement part.


"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

 

[fcsuper]

There is a way to handle this scenario in the ASME Y14.100 and ASME Y14.35 documents.

The rule is to pull a new number if interchangeability is an issue. If not, it is generally a revision. Some might argue that the interchangeablilty is affected (even if it is not actually changed) by using the new standard and that may require a new number, but that will be up to you.

See ASME Y14.35 fig 2 and paragraph 4.4 for info on to handle this scenario.

Matt Lorono
Lorono's SolidWorks Resources & SolidWorks Legion

http://groups.yahoo.com/group/solidworks & http://twitter.com/fcsuper

 

[KENAT]

The above focuses on ASME drawing stds.

I'm not entirely sure what the FAA's take may be. You might want to ask over in one of the aeronautical forums

http://www.eng-tips.com/threadcategory.cfm?lev2=3.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[REDesigner09]

Hi Everyone,

Thanks for the info. I think I have what I need for now.