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 PANEL STA 727E+12 TO 738 HAS CORROSION. GROUNDED - YES. REMOVED CORROSION FROM AFT PIT L/H TRANSITION PANEL AT STA 727E+12 TO 738 IAW B737-800 SRM 53-00-53-1A-2, ORIGN'L MATERIAL WAS .040 IAW B737-800 SRM 53-60-53-01-2 REMOVED .020. REMAINING IS .020 FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2. REPAIRED THE AFT PIT L/H TRANSITION PANEL FROM STA 727E+12 TO 738 USING MAT BAC 1496-377 IAW B737-800 SRM 53-00-53-2R-5