What was found
SHV - DURING C-CHECK LT OMEGA BEAM HAS CORROSION AT FR 20. MAINTENANCE REPAIRED LT OMEGA BEAM AT FR 20 IAW EMB 135 SRM 53-21-10, SECTION 2, FIGURE 201, SHEET 2. INSTALLED NUT PLATE IAW EC 5320-01137. PAINTED ON REPAIR AREA IAW EC 5320-01140. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.