What was found
DURING B-04 CHECK EXFOLIATION CORROSION WAS FOUND ON LOWER SURFACE OF FRAME SUPPORT JUST FORWARD OF FR 70, STR 23 LT. MAINTENANCE REMOVED CORRODED FRAME SUPPORT AT FR 70, STR 23 LT; FABRICATED A NEW REPLACEMENT FRAME SUPPORT; INSTALLED REPAIR PART IAW A319 SRM 51-42-11, FIG 1-3, 8, 14 & 17.