As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: INTERCOSTAL GALVANIC CORROSION BETWEEN STATION 787 AND STATION 807 AT STRINGER 20L. MAINTENANCE REPLACED INETERCOSTAL BETWEEN STATION 787 AND STATION 807 AT STRINGER 20L PER AARD 51-00-05 AND BOEING DRAWINGS146A9401, AND146A7550.