What was found
AT D CHECK, RIVET HEAD POPPED, STRINGER 19R STA 455 EXTERIOR SKIN JUST UNDER INSTRUMENT COOLING DUCT. REMOVED FASTENERS FROM STA 440 TO 480. REMOVED SURFACE CORROSION AT INNER LAP SEAM STR 19R, WITHIN LIMITS. CUT OUT DAMAGED SKIN AREA, INSTALLED FUSELAGE EXTERNAL SKIN REPAIR PER SRM 53-30-3, 21 BY 9.25, FILLER 21 BY 7, N/R 3120.