div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: · material costs equaling about 50% of engine MRO costs it is easy to see why operators have installed more repaired parts used serviceable material and certified alternative src=https:reader033vdocumentinreader033viewer20220417095e46cf0c9204c76cac3270d0html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: · material costs equaling about 50% of engine MRO costs it is easy to see why operators have installed more repaired parts used serviceable material and certified alternative src=https:reader033vdocumentinreader033viewer20220417095e46cf0c9204c76cac3270d0html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv