What was found
DURING THE ACCOMPLISHMENT OF EO 4753B324, REV B (SB 747-53A2450, REV 6, AD 2010-20-08). ONE FASTENER HOLE ON THE FRAME STRAP (PN 65B01849-26) WAS FOUND WITH A 0.0625 INCH CRACK EXTENDING IN THE AFT DIRECTION AS SEEN IN THE REF /2/ RS R53-62-37168 REV A. IN ADDITION TO THE SUBJECT DAMAGE AN EXISTING REPAIR WAS FOUND BETWEEN S-17R AND S-18R WITH 2 EXISTING DOUBLERS AND A SPLICED SECTION OF THE REVEAL PANEL (PN 65B05000-70). AN OPEN HOLE INSPECTION WAS ACCOMPLISHED ON THE SURROUNDING FASTENER HOLE LOCATIONS IN THE STRAP AND UNDERLYING FRAME STRUCTURE. THE SURROUNDING EDGE FRAME STRUCTURE HAS BEEN CONFIRMED TO BE CRACK/DAMAGE FREE IAW SB 747-53A2450 INSPECTION REQUIREMENTS. WITH THE REVEAL SECTION REMOVED AN HFEC INSPECTION OF THE FRAME STRAP BETWEEN S-17R AND S-18R IS ACCOMPLISHED IN LIEU OF THE SB SPECIFIED & NBSP; LFEC. THE DAMAGE WAS REPAIRED BY TRIMMING AND SPLICING THE FRAME STRAP, REPLACING THE REVEAL PANEL AND INSTALLING 2 DOUBLERS.