What was found
SAW - DURING CPCP-4 INSPECTION, MAINTENANCE FOUND THAT THE LEFT FWD INBOARD AND OUTBOARD, LEFT AFT INBOARD AND OUTBOARD, AND THE RIGHT AFT INBOARD AND OUTBOARD SEAT TRACKS WERE CORRODED. REMOVED AND REPLACED ALL SEAT TRACKS. AIRCRAFT WAS RETURNED TO SERVICE. REPLACED 2 EACH. REF: OPERATOR CONTROL NRS ACFT TT: 22,385.5 HOURS. ACFT TC: 24,959. SIMA981675, AND 98ZZZX2360 THROUGH 98ZZZX2363.