GP12 is an early production containment requirement: a temporary added inspection you run on top of normal production right after a launch, a design change, or a process change. Its job is to catch any launch-related defect at your dock before it can reach the customer, until the process proves stable. For Ford Kentucky Truck Plant suppliers, GP12 is a normal part of launching or changing a part, not a punishment, and passing it cleanly protects your PPM from day one.
What GP12 actually requires
GP12 adds a dedicated, documented inspection station that checks defined characteristics on the launch parts before they ship. The station uses clear inspection criteria, boundary samples for borderline conditions, and a log of every part inspected, accepted, and rejected. The point is a redundant safety net that runs in parallel with your normal process controls while the launch settles.
Unlike controlled shipping, GP12 is planned in advance as part of the launch, not triggered by an escape. You typically exit GP12 after a defined volume or number of clean days with no launch defects, at which point the customer agrees the process is stable and the extra station can come down.
How GP12 relates to Safe Launch and PPAP
Safe Launch is the broader launch-control phase; GP12 is the containment inspection inside it. PPAP is the approval package that proves the part meets print before mass production. In practice you submit PPAP, run under Safe Launch and GP12 at start of production, then transition to normal controls once the exit criteria are met. Treating the three as one connected system, rather than separate paperwork, is what keeps a launch clean.
How to pass GP12 without hurting throughput
The suppliers who clear GP12 fastest set the station up before job one, staff it with trained inspectors, and record data every shift so the exit evidence builds itself. If you do not have the people or space, an independent containment provider can run the GP12 station for you, minutes from the plant, so your production team stays focused on building parts. Clean, well-documented GP12 data is also the easiest way to keep the customer from adding controlled shipping later.