What was found
CORROSION AT MULTIPLE LOCATIONS ON LH SIDEWALL SEAT TRACKS AT FS364, FS386, FS394, FS409, FS409+8, FS409+16, FS409+32, FS409+40, FS409+64, FS409+96 AND FS409+128. ***AIRCRAFT REMOVED FROM SERVICE*** REPLACED LH SIDEWALL SEAT RAILS AT MULTIPLE LOCATIONS ON LH SIDEWALL SEAT TRACKS FS364, FS386, FS394, FS409, FS409+8, FS409+16, FS409+32, FS409+40, FS409+64, FS409+96 AND FS409+128. RESTORED SURFACE FINISH. ALL WORK WITHIN LIMITS WAS PERFORMED IAW CRJ200 53-01-11 REV 63. WORK PERFORMED UNDER AERSALE WORK ORDER 003375, CARD 20290, TT:39614:0 TC: 37971.