As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0407322) DURING C-CHECK AT QRO, CORROSION WAS FOUND AFFECTING THE FUSELAGE SKIN 146A3231-21 (M/F 0.160 THICK 2024-T3 CLAD SHEET) AT DEACTIVATED NATS AIRPHONE ANTENNA AREA AT BS 747 & 767 AND BETWEEN S-27R & S-27L. ALL EVIDENCE OF CORROSION WAS REMOVED BY BLEND OUT.