What was found
AFT MCD HINGE PIN BROKEN AT FUSE 580. REMOVED AFT HINGE SECTION IAW B727 SRM 51-30-2 FIG 7. CLEANED HINGE SECTION AND FUSE SKIN, EVAL NO CRACKS NOTED. CUT HINGE SECTION IAW AEI STC DRAWING NR AE5291, REV, C SHEETS 3, 4 & 5. TREATED & PRIMED HINGE SECTION & SKIN IAW B727 SRM 51-10-2 & AEI STC DRAWING NR AE5291 REV C. REPLACED HINGE PIN P/N:MS20233 P4-7200 IAW S/B AEI01-01-B. INSTALLED AFT HINGE SECTION IAW STC DRAWING NR AE5291 REV C.