What was found
DURING M-CHECK, FOUND MAIN PASSENGER CABIN STA 285-313, LBL 22 SEAT TRACK HAS CORROSION. REMOVED CORROSION FROM BS 200-313, LBL 22 IAW SRM 51-10-3. ORIG MAT .100, REMOVED .051, AREA BLENDED 3" X 1.5" OUT OF LIMITS IAW SRM 53-05, FIG 4B. REMOVED SEAT TRACK IAW SRM 51-30-01. INSTALLED SEAT TRACK & SPLICE IAW 53-05, FIG 4.