What was found
DURING OP 16 MAINT CHECK, THE LT WING FLAP WAS CRACKED IN UPPER SUPPORT ANGLE ON I/B SIDE OF O/B FLAP HINGE CASTING IN FLANGE. CRACKED ANGLE (P/N 9957600-7) WAS REMOVED AND REPLACED WITH NEW ANGLE PER SPM 6-70-01, PARA 4, SUBSECTION B SRM 51-6--0.