Abstract: A method of repairing a turbine blade includes positioning the turbine blade within a system including a machining tool; determining a first distance between a surface of a first PSP attached to a tip shroud of the turbine blade and a datum surface formed in the tip shroud; removing the first PSP from the tip shroud; coupling a second PSP to the tip shroud; and machining a surface of the second PSP using the machining tool, wherein machining the second PSP surface includes controlling movement of the machining tool using the datum surface as a reference, such that the machined second PSP surface is located the first distance from the datum surface.