General Electric Aircraft Engines has digitally captured , and made available to design engineers , Cpk data on almost all of its manufacturing processes and it strives to have critical processes in control to a point where they will yield no more than 1 defect in 500 million parts , a Cpk of 2.0 .
General Electric Aircraft Engines sketches out the Cpk data on a piece of paper , as they don 't digitally capture it .