Application segmentation delineates the end‑use domains that drive demand for aviation‑grade prepreg. Aircraft structural components—including wing skins, fuselage frames, and bulkheads—represent the largest share, accounting for roughly 45 % of total revenue, because they require the highest strength‑to‑weight ratios and stringent fire‑resistance standards. Interior components such as cabin panels, flooring, and overhead bins contribute about 25 % of the market; their growth is linked to passenger‑experience upgrades and lightweight cabin redesigns. Engine components (e.g., fan blades, casings) occupy roughly 20 % of the market, reflecting the critical need for thermal stability and fatigue resistance under extreme operating temperatures. Finally, the unmanned aerial vehicle (UAV) segment, at an estimated 10 %, is expanding as defense and commercial operators adopt composite‑intensive airframes for longer endurance. Collectively, these application categories define the overall Aviation Grade Prepreg segmentation and illustrate how each use‑case adds distinct value to the market’s size and trajectory.