What was found
PAE - FLT NR 3791 - DURING ROUTINE SCHEDULED C-4/S-1 MAINTENANCE CHECK, FOUND CORROSION AT AFT SERVICE DOOR THRESHOLD SUPPORT STRUCTURE X3254, 3CM FORWARD OF FR 68, Y-1250, Z-540. REMOVED CORRODED AREA AND FABRICATED REPAIR PART. ALODINED, PRIMED AND INSTALLED AT X3254, Y-1250, Z-540 PER SRM 53-00-14. (M)