What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND ON THE FLOORBOARD STRUCTURE (SEAT TRACK) UNDER FLOORBOARD PANEL 226BRF. MAINTENANCE REMOVED & REPLACED SEAT TRACK P/N 170-03263-001 IAW EMB 175 SRM 51-41-01, 51-41-02, 51-43-01 & 51-43-02. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.