What was found
DURING PREFLIGHT INSPECTION, FOUND LEVEL 2 CORROSION ON FUSELAGE TAIL SECTION PLATING AT FS 1783, L17L. CUT OUT DAMAGED AREA, FABRICATED, INSTALLED FILLER AND DOUBLER IAW SRM 53-2-1 FIG 7, PG 115 AND 116. CLASS 3 REPAIR TO BE REPLACED BEFORE 6,000 LANDINGS.