From: Stan Hilliard
Date: 30 May 2001
Time: 16:42:13
Hi Nia,
I think that Mil-Std-105E was cancelled because the US Congress passed a paperwork reduction act. Z1.4 for attributes is the same as Mil-Std-105E, except that it is no longer free. The philosophy behind it is the same. The sampling plans in it are the same.
Mil-Std-105E is same as Mil-Std-105D with an additional set of OC Curves for the case where switching rules are used. (Between normal, tightened, and reduced plans). A few words were changed -- like substituting "nonconforming" for "defective".
I think it is best to use the operating characteristic curve directly to design sampling plans rather than the cookbook approach of Z1.4. Z1.4 does not inform the casual user of the amount of protection that its plans offer. It is a "one-point" standard based on AQL. See my discussion of AQL at:
www.samplingplans.com/aqlprimer.htm
Stan Hilliard