As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT SIDE AFT CARGO COMPARTMENT TRANSITION PANEL HAS CORROSION AREAS FOUND BETWEEN BS 727 AND BS 727I +8 GROUNDED - YES. REMOVED AND EVALUATED DAMAGE FROM AFT PIT L/H TRANSITION PANEL FROM STA 727 TO 727I+8, ORIG THICKNESS: .040 REMOVED: .008, REMAINING: .032 AND IS FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-00-53-1A-1 & SRM 53-60-53-OI-2. TOOL#T8224V DUE 31/MAR/26 REPAIRED NEW TRANSITION PANEL IAW B737-900 SRM 53-00-53-2R-5. REMOVED AND INSTALLED IAW B737-900 SRM 53-00-53-2R-5.