100%: only original spare parts are used or second source parts are systematically investigated and released including evaluation and (risk) assessment of any difference to original parts.
Introduction and changes of indirect materials are fully under the control of the change management board incl dedicated rules
75%: only original spare parts are used or second source parts are systematically investigated and released.
Introduction and changes of indirect materials are fully under the control of the change management board incl dedicated rules
25%: second source spare parts and/or indiect materials are assessed and released by the change management board only case-by-case. There are consistent rules or guidelines.
0:second source spare parts and/or indiect materials are used without additional qualification"