What was found
DURING HEAVY CHECK INSPECTIONS ON FWD FUSELAGE FLOOR STRUCTURE, CORROSION FOUND ON LH I/B SEAT TRACK BETWEEN FR 12-20. LH I/B SEAT TRACK BETWEEN FR 12-20 REPLACED IAW SRM 51-41-01 , 51-43-01, 51-43-02 REV 45 MAY 28/2021 AAR YQG NRC 4502607-2000-0126