This should happen prior to your PSW and usually coincides with the capability study. It is to prove that you can contain the quantities and quality required to meet deliveries. Can be part of the Launch Readiness Review.
The only catch is that your capability studies are to be run on production equipment at a rate which will support the projected volumes. This is harder than it looks prior to PSW if you have customer owned tooling.
Here's what I have, please remember that my company is a proto supplier so you really need to contact your Ford STA for verification of requirements. I have 1 more file of APQP checklists but its over 7 meg.
Due to squeezing every possible second out of a "launch timeline", we have NEVER had a Run at Rate done until after PPAP approval. Typically, there is a ramp up to get to full volumes for a new product and our SQEs don't wish to perform the RandR until we're ready to meet full volume expectations.
Stew - As a "prototype house" why would you be doing Run at Rates (a production requirement)
As a Ford supplier someone at the location needs to check the Covisint FSP and look under the Quality directory. there is a Run at Rate procedure and also a "Phased PPAP" procedure. The reference to before PPAP comes through the Phased PPAP procedure since no "Full Approval" is granted until all 3 elements of the Phased process are completed.