What was found
DURING A MBV INSPECTION, LEFT OMEGA BEAM WAS FOUND TO BE CORRODED AT FRAME 20. REMOVED THE CORROSION BY MAKING A CUT OUT, INSTALLED A DOUBLER, FILLER, PLATE AND TWO SHIMS. REPAIR DONE IAW EMB SRM, SRM 145/1142, REV 33, CHAPTERS 53-00-10 FIG 201 SHEET 1. AIRCRAFT RETURNED TO SERVICE. (M)