As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AVIONICS BAY, BELOW FLOOR BOARD BETWEEN FS 394.0 TO FS FS 409.0 THERE IS EVIDENCE OF CORROSION AT INTERCOSTAL AT STR 27L. (C-CHECK) RO: 04/28/2019 REMOVED AND REPLACED THE LT INTERCOSTAL BETWEEN FS 394.0 AND 409 AT STR 27L IAW SRM. PRESSURE LEAK CHECK GOOD.