What was found
EXFOLIATION CORROSION ON LONGERON 23 LT AT STA Y=1155, 1174, 1193, 1212, 1231, 1240, 1252, 1259 AT AFT CARGO COMPARTMENT. SUPPORT AND SPLICE WERE REMOVED LONGERON STA Y=1146 TO 1201 WAS TRIMED AND REMOVED STRUT WAS REMOVED ON STA Y=1136. NEW LONGERON WAS DRILLED AND NEW HOLES WERE TREATED AND PAINTED. NEW LONGERON SECTION WAS INSTALLED IAW SRM 51-30-2, 51-30-5, 53-02, FIG 18 51-10-4, 53-02, 51-10-3 PARA 14 AND 21.