What was found
DURING C-CHECK, FOUND AFT FUSELAGE SKIN DOUBLER HAS CORROSION FROM FS 1520.000 AND FS 1530.000 AND BETWEEN L23L AND L23R. REMOVED DOUBLER, REMOVED CORROSION, FABRICATED AND INSTALLED IAW DER NR 96IALE-005D-10, TREATED AND PRIMED IAW SRM 51-1-8 AND SEALED AREA IAW SRM 51-1-4. (X)