What was found
DURING ROUTINE C-CHECK, FOUND FWD OF FLAT AFT PRESSURE BULKHEAD HAS IMPROPER REAPIR AT LONGERON 28. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED EXISTING REPAIR DOUBLERS. REMOVED DAMAGED AREA. PERFORMED NDT INSPECTION. NO CRACK, NO CORROSION. FABRICATED NEW SKIN, INTERNAL AND EXTERNAL DOUBLERS. CLEANED, TREATED, AND PRIMED AEA AND REPAIR PARTS. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW SB. (K)