ECSS-Q-60-01A, SPACE PRODUCT ASSURANCE: EUROPEAN PREFERRED PARTS LIST (EPPL) AND ITS MANAGEMENT (4 OCT 1999)., This Standard contains the European preferred parts list (EPPL) and provides the rules for establishing the list of preferred and suitable components to be used by European manufacturers of spacecraft hardware and associated equipment. The operating rules for management, administration and maintenance of the EPPL are defined in annex A of this Standard.