What was found
DURING SCHEDULED MAINTENANCE DAMAGE WAS DISCOVERED IN THE AFT EQUIPMENT BAY IN THE AREA OF BS 1162 FRAME STRINGERS 7 - 8L CHAFED FROM A HYDRAULIC LINE GROUP STANDOFF. THE DAMAGE INCLUDED GOUGING OF STRINGER 6L, 7L, 7R ( AND END CAP), FRAME 1162, AND FUSELAGE SKIN BETWEEN BS 1144 AND 1162. REPAIRED IAW REOS 670-53-71-047, 690-53-61-637, 690-53-61-638, AND 690-53-61-639. MAJOR REPAIR IAW SOP5702. AIRCRAFT OK FOR CONTINUED SERVICE.