Transitioned Drawings - Significant Drawing Numbers
Transitioned Drawings - Significant Drawing Numbers
(OP)
1. Our Company has transitioned many TDP's from several companies. We always add a transition statement to the first sheet of each drawing and bump the revision letter.
2. We have some drawings from a particular company that used a significant drawing numbering and part numbering system.
3. Over 80% of their drawing numbers include the P/N dash number. ie. They used 12B040501-1001 as the drawing number for the Top Assembly and not just 12B040501; they then used 12B040501-2001 = Primary Sub-Assembly; 12B040501-2101 = Another Primary Sub-Assembly.
4. We are making design improvements that require us to roll a sub-assembly P/N and the top assembly P/N. ie. The new 12B040501-1003 consists of a revised 12B040501-2003 and an unchanged 12B040501-2101.
5. Since the orginal design activity used the P/N dash number as part of the drawing number, I've been asked to do the same thing.
Q1. Can I continue to use the other companies drawing numbering sequencing?
Q2. For the new drawings, I plan on using our DAI (CAGE CODE) and not theirs. Correct?
2. We have some drawings from a particular company that used a significant drawing numbering and part numbering system.
3. Over 80% of their drawing numbers include the P/N dash number. ie. They used 12B040501-1001 as the drawing number for the Top Assembly and not just 12B040501; they then used 12B040501-2001 = Primary Sub-Assembly; 12B040501-2101 = Another Primary Sub-Assembly.
4. We are making design improvements that require us to roll a sub-assembly P/N and the top assembly P/N. ie. The new 12B040501-1003 consists of a revised 12B040501-2003 and an unchanged 12B040501-2101.
5. Since the orginal design activity used the P/N dash number as part of the drawing number, I've been asked to do the same thing.
Q1. Can I continue to use the other companies drawing numbering sequencing?
Q2. For the new drawings, I plan on using our DAI (CAGE CODE) and not theirs. Correct?





RE: Transitioned Drawings - Significant Drawing Numbers
A2) Sure. Unless you are selling the drawing package and the buyer requests their number be on the drawings.
I never did enjoy the significant number concept, but some find it helpful. A decent data management system makes up for quite a bit of what's lost with significance, particularly ensuring that numbers aren't duplicated.