As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO PIT LH TRANSITION HAS AREAS OF CORROSION BEGINNING AT STA 500 AND RUNNING AFT TO STA 500I (DOT 005). GROUNDED - YES. REMOVED AND REPLACED NEW TRANSITION PANEL ON FWD CARGO PIT LH SIDE FROM STA 400 TO STA 500I IAW B737-800 SRM 51-40-02-0G-0 W=1" O= .040" R= 033" L= 2" D= .007".