As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK *** LEVEL 2 CORROSION WAS FOUND ON GUSSET PLATE 170-60257-001 @ AFT CABIN WET AREA. GUSSET PLATE WAS REMOVED AND REPLACED IAW EMB170/175 SRM 51-43-03 REV 45. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION