What was found
MCN - DURING C22 CHECK DISCOVERED LEVEL 2 EXFOLIATION CORROSION ON AFT SIDE OF FRAME TIE AT BS 967 BETWEEN STR 27L AND STR 27R. CORROSION WAS REMOVED AND RE-WORK WAS FOUND TO BE OUT OF LIMITS IAW BOEING 737-300 SRM 53-00-07-1A1 FIG 101. DAMAGED AREA WAS REMOVED IAW BOEING 737-300 SRM 53-00-07-2R4 FIG 201. FABRICATED SHEAR TIE, FILLERS AND SUPPORT ANGLE IAW BOEING 737-300 SRM 53-00-07-2R4 FIG 201. INSTALLED FABRICATED REPAIR PARTS ON FRAME AT BS 967 BETWEEN STR 27L AND 27R IAW BOEING 737-300 SRM 53-00-07-2R4 FIG 201.