What was found
DURING BC4 CHECK DISCOVERED CORROSION ON THE RT IB SEAT TRACK AT FR 39+5 INCH AND Y-765. MAINTENANCE REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS IAW SRM 53-31-15 FIG 101, PAGE 102. REMOVED AND INSTALLED NEW SEAT TRACK BETWEEN FR 36 AND FR 41, ALSO AT Y-765 IAW SRM 51-42-11.