What was found
DURING C-CHECK, FOUND CORROSION UNDER NUTPLATE ON FRAME AND FRAME SPLIT IN AFT LOWER COMPARTMENT, Y=1100 ABOVE LONGERON 34 RT. REMOVED CORROSION, CUT OUT DAMAGED AREA OF FRAME, FABRICATED FILLER DOUBLERS IAW DER APPROVED ENGINEERING SKETCH A98-R02 AND INSTALLED IAW DC-8 SRM 51-1-20D.