What was found
NUMEROUS CORROSION FOUND ON SEAT TRACK FLANGE UPPER AND LWR SURFACES FROM STA 680 TO STA 780 AT LBL 25. REMOVED CORROSION AND CHECKED LIMITS FO SEAT TRACK IAW SRM 53-00-52 / 51-10-02. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-52. BEFORE REWORK; .145"/AFTER REWORK; .085". REMOVED SEAT TRACK IAW SRM 51-40-02. FABRICATED NEW SEAT TRACK. LOCATED, DRILLED, TREATED AND PRIMED IAW SRM 51-10-02/ 51-20-01. INSTALLED NEW SEAT TRACK IAW SRM 51-40-02. THIS REPAIR IS CLASSIFIED AS A CAT "A" MAJOR REPAIR.