The present invention provides polishing pad for electrochemical mechanical polishing. The plate enters a supplementary opening formed in a fuselage panel. The apparatus also eliminates the need of a cam and wiring harness, as well as manual labor traditionally required to install these components. When an access code is written from the outside to the designated area, the memory apparatus is access-restricted. At least one of the plurality of locations in flash memory is selected based at least in part on the determined measures of health and the selected location in flash memory isare written to.