What was found
REMOVE AND REPLACE SEAT TRACK FROM BS 440 TO BS 680 LBL 45.50. REMOVED AND REPLACED SEAT TRACK BY FABRICATION AT MAIN DECK FROM BS 440 TO BS 680 LBL 45.50, IAW B757 SRM 51-40-02-0G, 51-40-05-0G,51-20-01-0G, AMM 51-21-10-7, BOEING DWG NR 143N8750 REV C.