What was found
PAE - FLT NR 3887 - DURING ROUTINE C-7 MAINTENANCE CHECK, FOUND CORROSION ON AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT BS 727B-4 TO 747, RBL 22, WL 156. REMOVED AND REPLACED SUPPORT FROM BS 727 TO BS 767 IAW SRM 53-20-02, FIGURE 9, 51-10-01, 51-30-02, 51-40-02. (M)