As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEVERE CORROSION ON LT AND RT AILERON MAIN SPARS BETWEEN SPAR AND BRACKETS. SPAR BULGES AROUND RIVETS ATTACHING THE BRACKETS TO THE SPAR. THIS CONDITION WAS FOUND WHEN INSPECTING AILERONS PRIOR TO RECOVERING. SUSPECT THEY MAY HAVE BEEN ON SEA PLANE OPERATED ON SALT WATER.