As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HORIZONTAL CENTER SECTION LOWER SKIN BETWEEN S-9 AND S-10 HAS HEAVY CORROSION JUST OUTBOARD RIB 2R-3R. BLENDED AREA ON LOWER SKIN BETWEEN S9 & S10 IAW B767 SRM 55-10-01. FOUND TO BE WITHIN LIMITS IAW REA B655-60486-MR, AIRCRAFT WAS GROUNDED.