What was found
MCN - MAJOR REPAIR - DURING C18 CHECK DISCOVERED GALVANIC CORROSION ON THE TOP OF BEAM AT BS 328, WL 208 AND FROM BL 27R TO BL 33R. CORROSION WAS REMOVED AND FOUND TO BE OUT OF LIMITS IAW BOEING 737-300 SRM 53-10-51-1A1 FIG 101. CUT OUT DAMAGED AREA OF BEAM IAW BOEING 737-300 SRM 53-10-51-2R 5 FIG 201. FABRICATED REPAIR CHORD, ANGLES AND SHIM IAW BOEING 737-300 SRM 53-10-51-2R 5 FIG 201. INSTALLED FABRICATED REPAIR PARTS AT BS 328, WL 208 AND FROM BL 27R TO BL 33R IAW BOEING 737-300 SRM 53-10-51-2R 5 FIG 201.