What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND ON THE LOWER RT SEAT TRACK BEAM AT CF1, FR'S 23-34. MAINTENANCE REMOVED & REPLACED THE RT SEAT TRACK BEAM CF1, FR'S 23-34, IAW EMB 170 SRM 51-43-01, 51-43-02, 51-40-02, 51-43-00 & 51-41-01. A/C IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.