As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GVI TO INSTALL PANELS AT WASTE TANK ENCLOSURE, FOUND INTERCOSTAL TO HAVE CORROSION. GROUNDED - YES. FAB NEW INTERCOSTAL & REMOVED & REPLACE INTERCOSTAL IAW DWG 146A9403ID0056 & SRM 51-40-02-0G-0W= 3" O= .050" R= .020" L= 3" D= 0.030".