Are you already registered for the audit and have access to https://www.eauditnet.com
? If not you will need to be.
Once you have access you can dig around and find the Surface Enhancement SE - Top NCRs,
and Supplier NCR Response Guidelines as well as the requirements and checklists. Make sure you download all the requirements and checklists for the processes you will be performing. Then perform your own internal audits to the checklists well in advance of the Nadcap audit. Correct any findings prior to the Nadcap audit. If you don't, you will fail the audit before you even start!
Peening Technologies of CT