What was found
MAIN CABIN SEAT TRACK AT LBL 22 HAS CORROSION/GOUGES FROM 854 TO STA 1069 AND A DRILL START AT STA 991.5 / REMOVED CORROSION ON SEAT TRACKS AT STA 854 TO 1069 IAW MD90 SRM 51-10-3 PG 46-48 PARA 26 AND MD90 SRM 53-40-01 PG 22. FOUND TO BE OUT OF LIMITS PER MD90 SRM 53-40-01 PG 22-22B. INSTALLED 2EA SEAT TRACK, 2EA SPLICE, 2EA PLATE AT MAIN CABIN LBL 22 FROM STA 854 TO STA 1069 PER MD90 SRM 51-30-05 VOL 2 PG 10A AND MD90 SRM 53-40-01 FIG 6 AND INSTALLED ID IAW PS 900-5-1 NO 4.