What was found
DURING OP 16 MAINT CHECK, FOUND REINFORCING DOUBLER ABOVE JACK PAD ABOVE SKIN WITH CORROSION, FS 996 LONGERON 28L TO L28R. REMOVED DOUBLER FOR REPLACEMENT PER SRM 51-01, PG 1 ITEM C. INSTALLED NEW 991561-73 DOUBLER PER DOUGLAS BLUEPRINT NR 9915561 AND SRM 53-30-2 AND 51-30-5.