METHOD FOR INSPECTING COOLING APERTURES IN A TURBINE ENGINE COMPONENT

A manufacturing method is provided. During this method, a preform component (60') for a turbine engine is provided that includes a substrate (74). A meter section (102) of a cooling aperture (64) is formed in the substrate (74'). An external coating (76',78') is applied over the substrate. At least a portion of the substrate (74') and the external coating (76',78') is scanned with an imaging system (156) to provide scan data indicative of an internal structure of the portion of the substrate (74') and the external coating (76',78'). A diffuser section of the cooling aperture is formed in the external coating (76',78') and the substrate (74') based on the scan data.