What was found
CABIN, SEAT TRACK HAS CORROSION FROM STA 1540 TO STA 1640, LBL 45.50. CORROSION ON SEAT TRACK FOUND OUT OF SRM LIMITS. SEAT TRACK FROM STA 1540 TO STA 1640, LBL 45.50, WL 208.10, REMOVED AND REPLACED IAW DWN 146N530 AND B757-200 SRM 51-40-02 REV. 96. REPAIR IS CLASSIFIED AS MAJOR IAW GMM 6-2-100 CRITERIA.