What was found
SEAT TRACK AT LBL9, FS 661.00+32-FS 847.00+16 HAS CORROSION. EVALUATED SEAT TRACK LBL9 FS 661.00+32-FS 847.00+16, FOUND TO BE OUT OF LIMITS IAW REO 670-53-00-013, REV J. REMOVED SEAT TRACK LBL9 FS661.00+32-FS847.00+16 IAW CRJ900 AMM 53-00-49-000-801 A11. REPLACED SEAT RAIL CORRODED SEAT RAIL WITH NEW SEAT RAIL AT LBL9 FS661.00+32-FS847.00+16 IAW AMM 53-00-49-400-801-A11. COMPLIED WITH ECTC REO 670-53-00-343 AND GREO 670-53-00-343, REV J AS WRITTEN. CLASSIFIED AS A MAJOR ALTERATION IAW REO 670-53-00-343.