Howmet has continued efforts to develop investment cast Ti-5553 alloy (Ti-5Al-5V-5Mo-3Cr) which has the potential to replace wrought Ti-6Al-4V in aerospace and airframe structural applications.  Prior studies with Ti-5553, a near beta alloy, focused on the development of both static and dynamic mechanical properties.  These studies showed Ti-5553 to have superior tensile and fatigue characteristics relative to Ti-6Al-4V and better hardenability than Ti-15-3-3-3.  More recent efforts have focused on the productionization of the alloy, including the development of preliminary process specifications, the development of baseline weld parameters, X-ray inspection (POD) efforts and validation of the heat treatment in a production environment.  The results of these studies will be discussed, and a specific production application for Ti-5553 alloy castings will be reviewed.