What was found
AT D CK, UPPER DECK NR 3 SEAT TRACK FS480 TO 560 IS WORN OUT ON 3 LOCK POSITIONS. REMOVED CABIN SEAT TRACK FROM STA 480 TO 630 PER SRM 51-30-2. INSTALLED NEW TRACK AT NR 3 POSITION AT STA 480 TO 630. MATERIAL USED; BAC 1520-792, INSTALLED PER SRM 51-30-2. REF: N/R 3393..