What was found
WHILE AC WAS IN FOR HVY CK FOUND CENTER FUSELAGE 3 LH IB SEAT TRACK FOUND CORRODED AT FR 74 FR76, FR 78, FR82, AND FR83.REPLACED SEAT TRACK PN 170-86081-005 IAW SRM 51-43-03. SEE AAR NRC# 4500934-2000-0116 FOR WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.