What was found
MAIN CABIN SEAT TRACK AT LBL 45 BETWEEN BS 727B -747+5' LOWER CROWN HAS CORROSION IN MULTIPLE AREAS. REPAIRED IAW DWG 146A5300 REV: -, EVALUATED MATERIAL LOSS OF .043 MAX LOSS OF .040 IAW SRM 53-00-52-1A-1, FOUND TO OUT OF LIMITS. CUT AND REMOVED SEAT TRACK AT BS 727B - 727E + 10', LBL 45 IAW SRM 53-00-52-2R-5. COMPLETED INSTALLING SEAT TRACK REPAIR SECTIONS LBL 45 STA 727B - 887 IAW SRM 53-00-52-2R-5 AND DWG 146A5300 REV-.