As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD PIT TRANSTION L/H SIDE HAS CORROSION FROM STA 500D TO 500I. GROUNDED - YES. REMOVED DAMAGE FOUND OUT LIMITS. REPLACED FWD PIT TRANSITION L/H SIDE FROM STA 500D TO 500 I IAW B737-800 SRM 53-00-53-2R-5.W= 1.2 O= 0.40 R= 0.35 L;= 0.6 D= 0.005.