What was found
WHILE AC WAS IN FOR HEAVY CHECK, FOUND CORROSION ON CENTER FUSELAGE 2 RT INBOARD SEAT TRACK AT CROWN TEETH AREA. REPLACED TRACK PN 170-99451-003, IAW SRM 51-42-01, 51-41-02, SEE AAR NRC NR 4500827-2000-0056 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.