The Boeing Portable Maintenance Aid (PMA) reached the 100-customer mark in September 2003 as airlines continued to select the powerful software tool to quickly troubleshoot maintenance issues on jetliners and improve their companies' airplane dispatch reliability. Used by airlines of varying fleet size throughout the world, PMA is a digitized library of key technical information contained in a few compact discs that can be loaded onto a mechanic's laptop computer for quick access when servicing an airplane at the airport gate. Boeing estimates PMA can reduce airlines' time to search and retrieve information by as much as 40 percent.