What was found
MAIN CABIN SEAT TRACK HAS CORROSION AT FR 40 -Y1456. REMOVED CORROSION FOUND TO BE OUT OF LIMITS, REMOVED SEAT TRACK AND 5EA FLOOR SUPPORTS AND DRILLED NEW SEAT TRACK, INSTALLED SEAT TRACK AND AND 5EA FLOOR SUPPORTS IAW SRM 53-10-16, 51-40-21, 51-40 40-40. THIS IS A MAJOR REPAIR.