What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND CORROSION ON FWD FUSELAGE FLOOR STRUCTURE, LT WINBOARD SEAT TRACK BEAM. AAR MX REPLACED LT WINBOARD SEAT TRACK PN 170-03264-001, IAW SRM 51-41-01, 51-41-02, 51-43-02, 51-43-03. SEE AAR NRC 4500788-2000-0096 FOR WORK PERFORMED. A/C REMAINS IN YQG FOR COMPLETION.