As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HEAVY MAINTENANCE VISIT CORROSION WAS FOUND ON THE LUG HOLE OF THE VERTICAL STABILIZER UPPER CLOSURE RIB FITTING (P/N 65-4233-16). THE CORROSION WAS REMOVED BY SPOTFACING AND OVERSIZING OF THE LUG BORE. A BUSHING WAS INSTALLED TO RESTORE THE HOLE TO THE ORIGINAL DIAMETER. THIS REPAIR WAS CLASSIFIED AS MAJOR AND APPROVED WITH AN 8110-3 FROM BOEING''S DER.