What was found
LOWER AFT FUSELAGE AT FR51-FR52, BETWEEN STR37R AND STR38R HAS A 0.40" GOUGE (A3NB-53-4-6229) PER HAECO LCQ NR 9296167. GENERATE D BY V923923. CUTOUT DAMAGED AREA AT FR50 STR38R TO STR 39R PER SRM53-00-11-30 0-013 PARA 2(A)(1)(C)&(D). FABRICATED & INSTALLED DOUBLER & FILL WE PER SAME SRM 2(A)(1)(G)-(K). TREATED, PRIMED & TOPCOATED. SRI 53-00-11-205-035 FOR SKIN THICKNESS 4MM REQUIRES INSP THRESHOLD FROM TIME OF REPAIR OF FC 19,400, FH 38,800 & STRUCTURAL MOD POI NT AFTER REPAIR OF FC 29,100, FH 58,200 & SUBSEQUENT INSPECTION & NTM 51-10-16. INTERVALS OF FC 3,700, FH 7,400, USING INSP METHODS NTM 51-10-15 OK TO DIP PER SRM. REQUIRES INSP THRESHOLD FROM TIME OF REPAIR OF 19400FC, 38800FH, & STRUCTURAL MOD POINT AFTER REPAIR OF 29100FH, 58200FH & SUBSEQUENT INSPECTION INTERVALS OF 3700FC, 7400FR