As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT L/H TRANSITION HAS AREAS OF CORROSION STA 727 TO 847. GROUNDED - YES. REMOVED CORROSION FROM AFT PIT L/H TRANSTIION PANEL PANEL WAS FOUND TO BE OUT OF LIMITS FROM STA 727Z-10 TO STA 847 IAW B737-800 SRM 53-00-53-1A-2. FABRICATED AND INSTALLED NEW L/H TRANSITION FROM STA 727I-10 TO STA 847 IAW B737-800 SRM 51-40-02-0G-0.W= 2" O= .041" R= .024" L= 7" D= .016".