As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
During Mck in ATL, corrosion was found in the left and right beaver tails. The beaver tails were removed to accomplish corrosion removal. After the beaver tail removal, it was noted that 11 fastener holes common to the pylon front spar were elongated on each side of the aircraft. Repaired per EA 99-181347.