What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND ON THE RT INBOARD CF 1 SEAT TRACK. MAINTNENANCE REMOVED AND REPLACED THE RT INBOARD CF 1 SEAT TRACK IAW EMB 170 SRM 51-43-01, 51-43-02, 51-40-02 AND EDT 2011-170/01766 REV C. PARTS CHANGED, 170-65632-001 (CFI FLOOR BEAM SPLICE) AND 170-67861-005 (SEAT TRACK, CENTRAL). AIRCRAFT IS STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.