What was found
WHILE PERFORMING MAINTENANCE IN HEAVY CHECK MAINTENANCE DAMAGED SKIN AFT LOWER FUSELAGE JACK PAD AREA. MAINTENANCE REPAIRED SKIN IAW EMB ETD 2013-170-006071 AND TI170-13-033. THIS WAS A MAJOR REPAIR. ITEMS REMOVED AND REPLACED WITH THE SKIN REPAIR ARE NON-FCS STRUCTURE, VERTICAL SUPPORT P/N 170-60205-001,VERTICAL SUPPORT P/N 170-60206-001, JACK FITTING P/N 170-60353-401, INTERCOSTAL P/N 170-61349-003, AND INTERCOSTAL P/N 170-61349-004. THE AIRCRAFT IS BEING RETURNED TO SERVICE CMH AT 18:00 4-25-2013.