What was found
DURING DATUM AIRCRAFT INPUT,A CORROSION (SIZE ABOUT:3.3"*0.8") WAS FOUND ON BULK CARGO FRAME LOWER LOBE FAIL SAFE CHORD (P/N:65B04347-149,STA2200) HORIZONTAL FLANGE AT STR 40R. THE REPAIR WAS PERFORMED PER BOEING MESSAGE NUMBER TEC-SOF-11-0099. THE REPAIR WAS APPROVED UNDER BOEING SR 1-2054920594 ON ODA-300064-NM FAA FORM 8100-9 DATED DECEMBER 16, 2011. THE INSPECTION REQUIREMENTS PER SB747-53A2500 REV 1 ARE REQUIRED. DETAILS OF THE REPAIR ARE RECORDED IN EN EA-53-1315.