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 THE LEFT ENGINE PYLON PANELS 419AEL AND 419AFR NACA DUCT NUT PLATES LOOSE AND CORRODED. MAINTENANCE REMOVED AND REPLACED LOOSE AND CORRODED NUT PLATES IAW EMB 170 SRM 51-42-02. THE AIRCRAFT REMAINS OUT OF SERVICE AND IS STILL IN C CHECK.