What was found
(LOG 0478631) CORROSION AFT CARGO BAY DOOR THRESHOLD WEB STA 767-807, RBL 35, WL 156. REMOVED AND REPLACED DAMAGED THRESHOLD WEB AT AFT CARGO BS 767-807, RBL 35, WL 156 PER B737-900 SRM 51-40-02-0G PAR 5.B, 53-60-15-1A-1, 51-10-02-0G, 51-40-05-0G AND BOEING # 146A8340 REV B.