What was found
DURING HEAVY MAINTENANCE: PYLONS / LH PYLON / PYLON TO WING CENTER FILLETS / INBD STRIP RIB 7A AND RIB 10A / CORROSION – PERMANENT REPAIR; REFERENCES: /1/ STS EA 160-2025-011 REV IR /2/ AIRBUS RDAF 81708156/003/2025#A /3/ REPAIR INSTRUCTIONS TD/81708156/012/2025#A. DESCRIPTION: DURING CURRENT (01/2026) M1 CHECK ON N913JB (MSN: 05909) @ MLB, STS REPORTED CORROSION DAMAGE ON THE LH PYLON TO WING CENTER FILLET INBD STRIP (PN: D5451804820000)- FABRICATED FROM ASNA3051-8600 [7075-T6 CLAD AL]) AT RIB 7A AND RIB 10A. DAMAGE WAS BLENDED IAW A321 SRM AND WAS EVALUATED IAW SRM 54-53-12 BUT WAS OOL DUE TO NO ADL BEING AVAILABLE. SEE REF /1/ FOR FULL DETAILS. STS REQUESTED PERMANENT REPAIR DISPOSITION FROM AIRBUS WHO PROVIDED REF /3/ TD, WHICH DEFINES A REPAIR CONSISTING OF PERFORMING A CUTOUT, NDT INSPECTION, DOUBLER AND FILLER FABRICATION AND INSTALLATION, AND NEW FASTENER WET INSTALLATION. THIS REPAIR WAS AUTHORIZED BY AIRBUS VIA REF /2/ RDAF. EC A26-030-01 IS ISSUED TO ACCOMPLISH THIS PERMANENT REPAIR PER REF /1/ STS EA. SUBSTANTIATION: THIS PERMANENT REPAIR IS APPROVED PER REF /2/, RDAF AND IS CLASSIFIED AS MAJOR.(E/C: A26-030-01)