What was found
WHILE IN FOR SI CHECK, MAINTENANCE REPORTED CORROSION ON FRAME AT STA 312, RBL 43, WL 170. REMOVED DAMAGED SECTION OF FRAME AND FAB REPAIR PARTS AND INSTALLED. ALL WORK IAW SRM 51-10-2, 51-40-2, 53-10-1, 51-10-6, 51-30-2, AND MM 51-20-151.