What was found
CORROSION LEVEL 2 AT REAR BARREL FLOOR SEAT TRACK AT FR 74 LBL 43.5 WL147. REPLACED SEAT TRACK AT LBL=43.5, WL=147 BTW FR=60 TO FR=75 PER A220 ASRP BD500-A-J51-42-20-00AAA-078A-A PAR. 3, 5 AND BOMBARDIER DWG= C01342701 REV= G. (LP 1620113 - AIRCRAFT WAS GROUNDED).