What was found
LEFT INBD SEAT TRACK AFT END CORRODED AT FR74 LBL 23 WL 151.5. REMOVED AND REPLACED SEAT TRACK L/H / I/B FROM FR 61 TO FR 74 LBL 23 WL 151.5 I.A.W A220 ASRP BD500-A-J51-42-20-00AAA-078A-A, BOMBARDIER PL C01342701 REV-G. (LP# 1600284; AIRCRAFT WAS GROUNDED)