As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FR 69 TO FR 70 AND BTW STR 32 TO STR 31 ON EXTERNAL SKIN OUT FLOW VALVE AREA AT LOWER FUSELAGE. REPLACED INTERNAL DOUBLER LOCATED OF FRAME 69 TO FRAME 70 AND BETWEEN STRINGER 31R TO STRINGER 32R, OUT FLOW VALVE AREA AT LOWER FUSELAGE AS PER SRM 51-72-11 AND DRAWING NR D53480191. MEASURES OF CORROSION ARE: L=2.762", W=0.843" D=0.038"