What was found
MAIN CARGO DOOR AFT HINGE APPEARS TO BE CRACKED, BS 640 STRINGER 4L. HFEC VERIFIED CRACK IAW B-727 NDTM PT 6-51-00-00 FIGURE 23. REMOVED AT MAIN CARGO DOOR AFT HINGE BS 640 STRINGER 4L AS REQUIRED IAW AEI BOEING 727-200 FREIGHTER M/M FIGURE 5201B REV G. FABRICATED AFT SECTION OF HINGE MATERIAL USED MS21001-16-7200 PO NR 9002527 DIMENSION 17.5 INCHES LONG IAW AEI BOEING 727-200 FREIGHTER M/M FIGURE 5201B REV G. TREATED AND PRIMED IAW B-727 SRM 51-10-2. INSTALLED NEW HINGE SEGMENT IAW AEI BOEING B-727 M/M FIGURE 5201 B REV G. OPS CHECK GOOD IAW AEI M/M CHAPTER 52 REV G.