A system for determining serviceability and remaining life of an in-service structure comprising: a processor circuit; and a memory coupled to the processor circuit, the memory comprising machine-readable instructions (530, 532, 534, 536, 538, 540) that, when executed by the processor circuit, cause the processor circuit to: access three-dimensional, 3D, scan data captured by a scanning device representative of an in-service structure; based on the 3D scan data, generate in-service computer-aided design, CAD, data representative of an in-service surface corresponding to the in-service structure; access (102, 104) nominal CAD data representative of a nominal volume comprising a nominal surface, wherein the nominal volume corresponds to a nominal structure, and wherein a portion of the nominal surface corresponds to the in-service surface; replace the portion of the nominal surface with the in-service surface to generate modified nominal CAD data representative of a modified nominal volume comprising the in-service surface, wherein replacing the portion of the nominal surface further comprises: raising the nominal surface with respect to the nominal volume to generate an enlarged nominal volume; and removing a trim volume defined by the raised nominal surface and the in-service surface from the enlarged nominal volume; and determine at least one of a serviceability level or remaining life estimate of the in-service structure based on the modified nominal CAD data. a processor circuit; and a memory coupled to the processor circuit, the memory comprising machine-readable instructions (530, 532, 534, 536, 538, 540) that, when executed by the processor circuit, cause the processor circuit to: access three-dimensional, 3D, scan data captured by a scanning device representative of an in-service structure; based on the 3D scan data, generate in-service computer-aided design, CAD, data representative of an in-service surface corresponding to the in-service structure; access (102, 104) nominal CAD data representative of a nominal volume comprising a nominal surface, wherein the nominal volume corresponds to a nominal structure, and wherein a portion of the nominal surface corresponds to the in-service surface; replace the portion of the nominal surface with the in-service surface to generate modified nominal CAD data representative of a modified nominal volume comprising the in-service surface, wherein replacing the portion of the nominal surface further comprises: raising the nominal surface with respect to the nominal volume to generate an enlarged nominal volume; and removing a trim volume defined by the raised nominal surface and the in-service surface from the enlarged nominal volume; and determine at least one of a serviceability level or remaining life estimate of the in-service structure based on the modified nominal CAD data. access three-dimensional, 3D, scan data captured by a scanning device representative of an in-service structure; based on the 3D scan data, generate in-service computer-aided design, CAD, data representative of an in-service surface corresponding to the in-service structure; access (102, 104) nominal CAD data representative of a nominal volume comprising a nominal surface, wherein the nominal volume corresponds to a nominal structure, and wherein a portion of the nominal surface corresponds to the in-service surface; replace the portion of the nominal surface with the in-service surface to generate modified nominal CAD data representative of a modified nominal volume comprising the in-service surface, wherein replacing the portion of the nominal surface further comprises: raising the nominal surface with respect to the nominal volume to generate an enlarged nominal volume; and removing a trim volume defined by the raised nominal surface and the in-service surface from the enlarged nominal volume; and raising the nominal surface with respect to the nominal volume to generate an enlarged nominal volume; and removing a trim volume defined by the raised nominal surface and the in-service surface from the enlarged nominal volume; and determine at least one of a serviceability level or remaining life estimate of the in-service structure based on the modified nominal CAD data.