What was found
L/H LOWER FUS SKIN FOUND BULGING CORROSSION AT DIAGONAL ATTACHED ANGLE APPROX S-21L STA 540. REF. AAR N/R:9967393ESFR CREATED AND SENT ACCOMPLISHED REPAIR AT WING CENTER SECTION FWD LWR SKIN PANEL REF. AAR ESR-WI #2023385-22-12079 AND EC/RA 5710-02928 REV. ORIGINAL. THIS IS A CATEGORY B REPAIR, AND REQUIRES REPETETIVE INSPECTIONS. DIP #1 AFTER THE ACCUMULATION OF 49,900 TOTAL AIRCRAFT FLIGHT CYCLES, BUT BEFORE 50,000, PERFORM AN INSPECTION OF THE FUSELAGE UPPER DRAG LINK ASSEMBLY BETWEEN STA 500 & 548 AND STR 21L & 23L ON AIRCRAFT N12225 IN ACCORDANCE WITH PART 2 OF THE LATEST REVISION OF ECRA 5710-02928. DIP #2 AFTER THE ACCUMULATION OF 48,900 TOTAL AIRCRAFT FLIGHT CYCLES, BUT BEFORE 49,000, PLANNING TO CONTACT ENGINEERING FOR THE INSPECTION REQUIREMENTS FOR THE FUSELAGE UPPER DRAG LINK ASSEMBLY BETWEEN STA 500 & 548 AND STR 21L & 23L ON AIRCRAFT N12225 IN ACCORDANCE WITH PART 2 OF THE LATEST REVISION OF ECRA 5710-02928. DIP#3 AFTER OCTOBER 06, 2026, BUT BEFORE NOVEMBER 06, 2026, PERFORM AN INSPECTION OF THE WING CENTER SECTION FORWARD LOWER SKIN PANEL LOWER EXTERNAL SURFACE AT STA 540 AND LBL 52.5 ON AIRCRAFT N12225 IN ACCORDANCE WITH PART 2 OF THE LATEST REVISION OF ECRA 5710-02928. DIP #4 AFTER AUGUST 06, 2026, BUT BEFORE SEPTEMBER 06, 2026, PLANNING TO CONTACT ENGINEERING FOR THE INSPECTION REQUIREMENTS FOR THE WING CENTER SECTION FORWARD LOWER SKIN PANEL LOWER CE AT STA 540 AND LBL 52.5 ON AIRCRAFT N12225 IN ACCORDANCE WITH PART 2 OF THE LA5009327.