As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND HARDWARE CORRODED ON RIGHT WING NUMBER 1 LOWER SLAT SEALS. MAINTENANCE REMOVED AND REPLACED HARDWARE FOR THE RIGHT WING NUMBER 1 LOWER SLAT SEALS IAW AMM 57-41-09. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK. SLAT SEAL P/N'S 170-35160-001, 170-35161-001, 170-35162-001, AND 170-35163-001 ALSO REPLACED.