As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) LH AND RH WING LOWER FORWARD SPAR CAPS CONTAINED SEVERE EXFOLIATION CORROSION IN AREA LOCATED AT WS 62 DUE TO ENGINEEXHAUST GASSES. AT LEAST 10% OF THE SPAR CAP MATERIAL IS AFFECTED BUT CAN ONLY BE SEEN WITH THE FUEL TANK BAYS REMOVED.