As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND ON THE RT CENTER CF3 SEAT TRACK BETWEEN FRAMES 81-82, - 129 INCHES FROM THE FRONT OF CF3 BEAM. MAINTENANCE REMOVED DAMAGE AND INSTALLED SEAT TRACK SPLICE DEVICE IAW EMB ETD 2011-170/01766.