As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C RAM AIR PLENUM HAS SURFACE CORROSION ON NR 2 TANK LWR SKIN ABOVE LT PRIMARY HEAT EXCHANGER. BLENDED OUT CORROSION DAMAGE, MAT LOSS .050, ORIGINAL THK .225. FLUORESCENT DYE PENETRANT AREA, NO DEFECTS NOTED. TREATED AND PRIMED AREA IAW B727 SRM 51-10-2. RESTORED FINISH IAW B727 MM 51-20-151.