What was found
DURING 4K INSPECTION IN BNA, SEAT TRACK AT LBL 18.3 BETWEEN FS 483 AND FS 630 IS CORRODED ON O/B FLOOR PANEL FLANGE. DAMAGE WILL BE REPAIRED IAW MESABA EO S53078, REFER EAMS WORK ORDER 211207, TASK 1538 FOR ADDITIONAL INFORMATION. AIRCRAFT RETURN TO SERVICE 12/17/04.