What was found
TAT: 17,939.02 HOURS. TLDG: 20,490. LGPG: 1,121,465. STA: SAW CRIC: 9,859. LEFT AFT INBOARD SEAT TRACK CORRODED. BLENDED, FOUND OUT OF LIMITS. ATR-42 IAW SRM 53-00-00 FIG 304. REMOVED AND REPLACED LEFT AFT INBOARD SEAT TRACK IAW EO NR E9-5300-013 R4.