What was found
DURING HEAVY MAINTENANCE: AFT FUSELAGE / STRINGER 43LH AT FR 65/ CORROSION - PERMANENT REPAIR; REFERENCES: /1/ STS EA 136-2025-018 /2/ AIRBUS RDAF 81669498/003/2025#A /3/ AIRBUS DOSSIER 81669498. DURING THE CURRENT (10/2025) M1 CHECK FOR A/C N905JB, STS REPORTED CORROSION DAMAGE ON STRINGER 43 LH (PN: D5348003020400) AT FR 65. THE ONCE BENDED, IT WAS NOTED THAT THE REMOVED MATERIAL WAS BEYOND SRM 53-41-13-283-002 LIMITS AS REPORTED IN /1/ EA PART. AIRBUS WAS CONTACTED FOR REPAIR DISPOSITION. AIRBUS PROVIDED THE REF /2/ RDAF WITH INSTRUCTIONS TO PERFORM A STRINGER COUPLING REPAIR IAW WITH A321 SRM TASK 53-41-13-300-004 WITH ADDITIONAL REQUIREMENTS RELATED TO INSPECTIONS AND SURFACE PROTECTIONS. THESE INSTRUCTIONS ARE APPROVED BY THE REF /2/ RDAF AS PERMANENT, WITH NO POST REPAIR INSPECTIONS REQUIRED. THIS EC ACCOMPLISHES THE PERMANENT REPAIR PER THE REF /1/ EA AND COMPLIES WITH THE REF /2/ RDAF WITHOUT DEVIATION. SUBSTANTIATION: THIS PERMANENT, CATEGORY A, REPAIR HAS BEEN APPROVED VIA REF /2/ RDAF AND IS CLASSIFIED AS MAJOR. (E/C: A25-947-01)