What was found
DURING ROUTINE C CHECK INSPECTION, FOUND LEFT FUSELAGE TAIL SECTION PLATING CRACKED AT STATION FS 1766.000 TO STATION 1781.000 LONGERON10 LEFT. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED EXISTING REPAIR. REMOVED DAMAGED AREA. FABRICATED REPAIR DOUBLER, AND INTERNAL FINGER DOUBLER, AND FILLER. CLEANED, TREATED, PRIMED AREA AND REPAIR PARTS. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW SRM 51-1-11, SRM 51-1-20D, SRM 51-3-1, SRM 53-2-1 FIGURE 7 SHEETS 1, 4, 5, SRM 51-1-21, SRM 53-2-1 FIGURE 7 SHEETS 1, 4, 5, 53-5-1 FIGURE 1 ITEM "A", AND SRM 51-1-8B.