What was found
CRACKS HAVE BEEN FOUND IN WING SPAR II CLOSE TO RIB 10 ON ACFT IN THE WORLDWIDE FLEET. THE RELEASED AD 2012-05-08 WHICH MANDATED ACCOMPLISHMENT OF REPETITIVE INSPECTIONS IAW SB 170-57A0053 TO ADDRESS THESE CRACKS. SUBSEQUENT TO THE RELEASE OF THE AD, RELEASED SB 170-57-0053, WHICH PROVIDES A MODIFICATION TO PREVENT THIS CRACKING. RELEASED EO E17X-57AD-001.2 TO ACCOMPLISH REINFORCEMENT OF THE RT WING SPAR II LOWER FLANGE IAW SB 170-57-0053 R1 PART IV. DURING ACCOMPLISHMENT OF EO E17X-57AD-001.2 ON ACFT IN SAT TWO CRACKS WERE FOUND IN HOLE A3. THE DIAMETER OF THE HOLE WAS REAMED UP TO THE MAXIMUM PERMITTED BY THE EO & THE CRACKS WERE STILL PRESENT. AFTER COMMUNICATION, THE HOLE WAS OVERSIZED AGAIN TO A FINAL SIZE OF .750” & THE CRACKS ARE STILL PRESENT. THIS EO IS BEING RELEASED TO PROVIDE A REPAIR FOR THE CRACKED SPAR. HAS CLASSIFIED THIS REPAIR AS A MAJOR REPAIR. THIS REPAIR WAS ACCOMPLISHED ON EO E17X-57AD-003 UNDER WORK ORDER 1511772.