What was found
DURING COMPLIANCE WITH MFG MANDATORY SB 53-2472, REVISION 4, DATED JULY 2003 AND AD 2005-01-18, AMENDMENT 39-13943, EFFECTIVE DATE MARCH 01, 2005 THE LT STRINGER NR 9 AT AFT PRESSURE BULKHEAD WAS FOUND TO BE CRACKED. REPAIRED THE NR 9 AFT FUSELAGE STRINGER ON THE LT SIDE AT FUSELAGE STA 347.75 BY INSTALLING MFG STRINGER REPAIR KIT PN 101-4063-3S SN 3218 IAW FAA APPROVED DATA MFG MANDATORY SB 53-2472, REVISION 4, DATED JULY 2003 USING MFG FIELD SERVICE KIT DRAWING 101-4063-3 AND AD 2005-01-18, AMENDMENT 39-13943, EFFECTIVE DATE MARCH 01, 2005. FAA FORM 337 WAS COMPLETED AND SUBMITTED AS REQUIRED.