What was found
AFTER FURTHER EVALUATION AT THE AFT CARGO DOOR SURROUND STRUCTUR E MAIN SILL WEB FOUND TO BE OUT OF LIMIT REQUIRE REPLACEMENT (RE F. AAR NR 1000042306) ALL DOCUMENTATION AND SUPPORTING DOCUMENTS ON RFD AAR N/R 1000042306. REMOVED & REPLACED THE AFT CARGO LOW MAIN SILL WEB IAW SRM 51-40-02-0G-0 DWG 146A8340. REF: AAR NR 1000042306 PER UAL REP OK TO CLEAR REMOVED AND REPLACED THE AFT CARGO LOWER MAIN SILL WEB IAW SRM 51-40-02-OG-0 DWG 146A8340.