What was found
CABIN SEAT TRACK AT BS 480-720B, LBL 24.5 HAS HEAVY CORROSION IN SEVERAL AREAS OVER ENTIRE LENGTH. REMOVED CORROSION ON SEAT TRACK LBL 24, BS 480-720B AND FOUND TO BE OUT OF LIMITS IAW SRM 51-10-1, 53-10-1, FIG 3. REMOVED SEAT TRACK IAW SRM 51-30-2, FABRICATED NEW TRACK BS 480-720B, LBL 24 FROM BAC1520-792 7178-T6 EXTRUSION IAW SRM 53-10-2. INSTALLED SEAT TRACK IAW SRM 51-30-2. FASI NR 04166.