What was found
LBL 9, SEAT TRACK SEGMENT FROM FS 581 TO 661+32 IS CORRODED AND OUT OF LIMITS. REMOVED SEAT TRACK AT LBL9, FS 661+32 TO 693 IAW AMM 53-00-49-000-801, CONFIG A07. INSTALLED NEW SEAT RAIL AT LBL9, FS 581 TO FS 661+32 IAW AMM 53-00-49-400-801-A07. COMPLIED WITH EC/TC REO 670-53-00-343 AND GREO 670-53-00-343, REV G AS WRITTEN.