What was found
DURING ROUTINE C-CHECK FOUND LEFT OUTBOARD TRAILING EDGE FLAP UPPER SKIN REPAIR PATCH GOUGED AT CENTER HINGE. REMOVED FASTENERS AND DAMAGED DOUBLER. FABRICATED NEW DOUBLER, LOCATED, DRILLED, TREATED, PRIMED, INSTALLED NEW DOUBLER, AND FASTENERS IAW DC8 SRM 51-1-21A, 57-2-0, AND 51-1-8.