As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND LEFT WING NR 1 SLAT LOWER EDGE SEAL WORN AND RUSTED HARDWARE. MX REMOVED AND REPLACED LEFT WING HARDWARE AS WELL AS LOWER SEAL NR 1 SLAT IAW EMB 175 AMM 57-41-09. A/C REMAINS IN CMH FOR HEAVY CHECK COMPLETION. P/N'S 170-35160-001, 170-35161-001, 170-35162-001.