As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MX-STL- DURING MAINTENANCE CHECK FOUND CORROSION BETWEEN FUSELAGE FRAMES 12 AND 13 AT STRINGERS 20L AND 20R. MAINTENANCE REPAIRED CORROSION AT STRINGER 20L AND REMOVED CORROSION AT STRINGER 20R BETWEEN FUSELAGE FRAMES 12 AND 13 IAW ATR72 SRM.