ECN numbering

[ewh]

I need some info regarding how others number their change orders. My experience in the industry has been to use non-significant ECN numbers, allowing for changes to multiple drawings with one ECN, but at my current employer the drawing number is used followed by the ECN number, 123456ECN-001 for example. This has worked well while they were a small company, but they are rapidly growing and this system does not allow for multiple file changes under one ECN. A minor part change affects several tools and assemblies, and as it now stands, they each need their own ECN to effect the change.
In todays electronic environment, I have a hard time accepting that "they need to be tied together" with the same number as a valid argument.
Other experiences would be greatly appreciated, especially within the aerospace industry.

The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over. - [small]Hunter S. Thompson[/small]

 

[KENAT]

Back in UK defence/aerospace, essentially non significant number taken from a number block allocated by the contracting authority or from our own system depending on who owned the drawings/what the contract said etc.

Current employer, date (YYMMDD) initials and then a numeric for if it's the first, second... eco that day. So my first ECO today would be 081201-KAT-01. So again non significant, although every 10 years a number could repeat itself.

Your places way, with the drawing number in the ECO number sounds like a pain.

KENAT,

Have you reminded yourself of faq731-376 recently, or taken a look at posting policies:

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

 

[ewh]

Thanks, KENAT. It is a pain, but fortunately I have my managers backing on this. It seems to be an Engineering vs Quality issue. Engineering wants to grow, but Quality claims that "this is the way we've always done it. It's in the Quality manual, so it must be right."

The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over. - [small]Hunter S. Thompson[/small]

 

[MadMango]

Non-significant numbers are issued for ECNs here, an aerospace company. Our system allows for multiple drawings to be under the same ECN number.

 

[fringe]

Ditto, completely non-significant linearly incrementing ECN numbers at my current military/aerospace sub-contractor which allows multiple drawings, BOMs, etc per ECN.

 

[swertel]

Double ditto.

--Scott

http://wertel.eng.pro

 

[ewh]

Thanks guys... it looks like I may be tackling another big task here.

The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over. - [small]Hunter S. Thompson[/small]