What was found
LEFT SEAT TRACK AT FS 661-693 HAS CORROSION. COMPLIED WITH EC/TC REO 670-53-00-343 AND GREO 670-53-000-343, REV J AS WRITTEN. REMOVED SEAT RAIL AT FS 661-693, LBL9 IAW AMM 53-00-49-000-801, SEAT RAIL EXFOLIATED 100 PERCENT MATERIAL LOSS, OUT OF LIMITS. INSTALLED SERVICEABLE SEAT TRACK OF LBL9 AT FS 661-693 IAW AMM 53-00-49-400-801.