What was found
DURING C CHECK AT MFG, N/R 691F1-1601-005 MAIN PASSENGER CABIN SEAT TRACK L/H O/B STA. 688 STA. 738 CORROSION FOUND AT ATTACHING SCREWS, HOLES CRACKED OUT, TOOL MARKING IN CENTER OF TRACK. REMOVED FAB. AND INSTALLED NEW SEAT TRACK P/N 60-6549 7178 T 6511 P.O. NR 0341745 FROM STA. 688 TO STA. 740 I.A.W. B-727 SRM 51-30-02, 51-30-8, 51-10-8, SEAT TRACK MACHINED ON TRAVELER 691T9-5001.