As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION FOUND AROUND THE HOLES (WHEELWELL-NOSE) AREA WHERE THE BLACK HEAT DUCT TUBING THAT RUNS THROUGH STRUCTURE MAKES CONTACT WITH THE ALUMINUM. FOUND THIS ON A 1981 CESSNA 414A WITH A TOTAL TIME OF 4900 HRS AND ALSO 1981 CESSNA 425 WITH 6203 HRS.