What was found
INSPECTION TYPE:C RIGHT BS 1480 BULKHEAD ONE EACH FASTENER NR 5 WAS CRACKED AT SPLICE FITTING AREA RUNNING AFT APPROX 0.065 INCH LONG. RIGHT BS 1480 BULKHEAD SPLICE FTG NR 5 HOLE OVERSIZED TO 0.625 INCH & HFEC CONFIRMED NO CRACK. REPAIR BUSHING FABRICATED & INSTALLED. NR 5 BOLT REPLACED. THE HOLE DIAMETER & EDGE/END MARGIN REF RS R53-43-35093 & EO B747-5310-19423A. BS 1480 BULKHEAD SPLICE HOLES 1 TO 26 REQUIRED REPEAT INSPECTION EVERY 6000 FLT CYCS PER SB747-53A2390.