What was found
DURING HEAVY MAINTENANCE: FUSELAGE / CENTER FUSELAGE / PRESSURE BULKHEAD @ FR 35 & STR 30L CRACKS AT FASTENER HOLES – TIME LIMITED REPAIR; AEM EA 53-9002-24 REV 0 (COVER & PARTS 1-5) RDAF 81405207/004/2024#A, 81405207 /4/ AIRBUS TECHNICAL DISPOSITION TD/81405207/035/2024#C DESCRIPTION: DURING CURRENT CHECK, WHILE PERFORMING INSPECTIONS PER MPD TASK 533186-01, CRACK DAMAGES AFFECTING THREE FASTENER HOLES (HOLES #2, #6, AND #7) WERE FOUND AT THE PRESSURE BULKHEAD FR 35 & STR 30L IN THE FRAME LAYER. A CUT-OUT WAS PERFORMED ON FR35 LAYER TO ELIMINATE THE CRACK AND THE HOLE ON FWD SKIN WAS OVERSIZE BUT CRACK STILL PERSISTED. SEE REF /1/ FOR FULL DETAILS. AIRBUS WAS CONTACTED VIA REF /3/, DOSSIER, AND PROVIDED REF /4/ TECHNICAL DISPOSITION, AUTHORIZING THE CUTOUT ON THE FWD SKIN AND THEN INSTALLING FILLERS ON FR35 & FWD SKIN LAYERS AND REINFORCING FR35. THIS EC A24-725-01 IS ISSUED TO ACCOMPLISH THE TIME-LIMITED REPAIR IAW AEM EA, REF /1/. EC A24-725-02 IS ISSUED TO TRACK THE DTA FOR THE PERMANENT REPAIR, DUE WITHIN SIX (6) MONTHS FROM REPAIR ACCOMPLISHMENT. SUBSTANTIATION: THIS TIME-LIMITED REPAIR IS APPROVED PER REF /2/, RDAF, AND IS CLASSIFIED AS MAJOR. (E/C: A24-725-01)