What was found
TWO CRACKS WERE DISCOVERED EMANATING FROM TWO FASTENER HOLES OF THE STATION 750.95 RBL 70.5 RIB CHORD UPPER VERTICAL FLANGE. THE AFFECTED UPPER VERTICAL FLANGE WAS TRIMMED OUT AND A REPAIR WAS INSTALLED PER TIMCO REO-06583, REVISION A. THIS REPAIR WHICH IS ACCOMPLISHED PER BOEING SERVICE BULLETIN 727-57-0112, REVISION 5, RECEIVED DER 811O-3 APPROVAL AS AN ALTERNATE MEANS OF COMPLIANCE TO AD94-07-08 AND AD90-06-09.