What was found
AFT SIDE STA 676, STR 11L CRACKED APPROXIMATELY 1.5" AROUND FORWARD HI-LOCK IN LOWER HAT FLANGE. REPAIRED STR 11L IAW SRM 53-0-03 AND ES 02821. CRACKED 1.5", PN 143T3001-7, STR 11L, EXACT FS/BS LOCATION ON AC FROM S11L, STA 676. ACFT WAS GROUNDED.