What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND LT I-BEAM HAS CORROSION ON FASTENER AT FR 88. MX REMOVED AND REPLACED LT I-BEAM SEAT TRACK IAW EMB 190 SRM 51-40-02, 51-43-01, 51-41-01. PN 170-65669-003. A/C REMAINS IN CMH FOR HEAVY CHECK COMPLETION.