What was found
DURING HEAVY MAINTENANCE: WINGS / CENTER BOX / FRONT SPAR VERTICAL STRINGERS & HORIZONTAL FLOOR BEAMS / @ LEVEL OF FR36 & Y-254 & Y+765 / CRACKS - PERMANENT REPAIR; REFERENCES: /1/ AEROMAN EA 57-0108-25 REV. 0 (COVER + PARTS 1-3) /2/ AIRBUS RDAF 81679714/004/2025 ISSUE A /3/ AIRBUS DOSSIER 81679714 /4/ AIRBUS REPAIR INSTRUCTION R571-12154 ISSUE. C. DESCRIPTION: DURING THE CURRENT (12/2025) M2 CHECK AT SAL FOR A/C N583JB (MSN02150), WHILE ACCOMPLISHING INSPECTIONS PER SB A320-57-1178, AEROMAN REPORTED CRACKS AT VARIOUS HOLE POSITIONS ON THE CENTER WING BOX FRONT SPAR VERTICAL STRINGERS & HORIZONTAL BEAMS AT LEVEL OF FR36 & Y-254 & Y+765. SEE REF /1/ AEROMAN EA FOR DETAILS. THE DAMAGES WERE EVALUATED AGAINST A320 SRM 57-11-18 & 57-11-14 AND NO REPAIRS WERE FOUND FOR THE SUBJECT DAMAGE. AEROMAN HAD ACCOMPLISHED REAMING OF THE CRACKED HOLES ALONG WITH NDT INSPECTIONS PERFORMED YIELDING CRACK-FREE CONDITIONS. AIRBUS WAS CONTACTED FOR REPAIR INSTRUCTIONS AND PROVIDED INSTRUCTIONS VIA REF /3/ DOSSIER TO ACCOMPLISH REPAIR IAW REF /4/ RI WHICH CONSISTED OF END-OF-BEAM REPLACEMENT AND APPLICATION OF A BEAM SPLICE REPAIR. THESE INSTRUCTIONS ARE APPROVED BY THE REF /2/ RDAF AS PERMANENT WITH NO POST REPAIR INSPECTIONS REQUIRED. THIS EC A25-1124-01 ACCOMPLISHES THE PERMANENT REPAIR PER THE REF /1/ EA AND COMPLIES WITH THE REF /2/ RDAF WITHOUT DEVIATION. NOTE: MSB A320-57-1228 IS NO LONGER APPLICABLE AT THE REPAIRED LOCATIONS (Y-254 & Y+765). SUBSTANTIATION: THIS PERMANENT, CATEGORY A, REPAIR IS APPROVED BY REF /2/ RDAF AND IS CLASSIFIED AS MAJOR.(E/C: A25-1124-01)