 All production Sabreliner 65 aircraft would be equipped with supercritical wings to be developed by Raisbeck, and Sabreliner models 60 and 80 would be retrofitted.The resulting Mark V wing was the first supercritical wing in service in the United States.Raisbeck built all 75 wing sets for the Sabre 65 in Seattle, and shipped them to Rockwell in El Segundo, California.