The software application published by MSC Software that features the module called **PA_CATIAV4_Access** is **MSC Nastran**.
**PA_CATIAV4_Access** refers to a module that facilitates the integration of MSC Nastran with CATIA V4, a parametric, CAD software application developed by Dassault Systèmes. This module allows users to access geometry from CATIA V4 within the MSC Nastran environment, enabling seamless transitioning between CAD modeling