As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK MAINTENANCE FOUND CORROSION AFT WET AREA ON GUSSET AT FRAME 90 AND LH TRACK BEAM. REMOVED AND REPLACED GUSSET AT FRAME 90 (AFT WET AREA). REF EMB SRM 51-- 40-08, APPLIED TOP COAT AT NEW GUSSET AT FRAME 90 (AFT WET AREA). REF EMB SRM 51-23-06. A/C REMAINS IN CHECK.