What was found
DURING HEAVY CHECK, MAINTENANCE FOUND CENTER FUSELAGE III, AFT R/H SEAT TRACK IS CORRODED AT FR84, RBL 11. CENTER FUSELAGE III, CORRODED AFT R/H SEAT TRACK AT FR 84, RBL 11, REMOVED AND REPLACED IAW EMBRAER 170/175 SRM 51-42-01 AND 51-43-02