I'm working on a record of standards for my company. I would like to know if there is relationships between PLCS and other standards?
ISO 10303 AP 239 (PLCS) builds upon the functionality defined by other standards relevant to product support. These include AECMA S1000D, AECMA Spec 2000M, United States Military Standard 1388, United Kingdom Defence Standard 00-60, etc.
You will find a detailed response on: http://www.oasis-open.org/committees/plcs/faq