What was found
SHV - DURING C-CHECK CORROSION ON LEFT HAND OMEGA BEAM LOWER FLANGE AT FR 20. MX REPAIRED LT OMEGA BEAM LOWER FLANGE AT FR 20 IAW EMB 145 SRM 51-30-01, 51-40-04, 51-40-06, 51-40-02 AND IAW EMB 145 CPM 51-21-04, 51-21-05, 51-21-06. THE AIRCRAFT WAS APPROVED TO RETURN FOR SERVICE.