Aeronautical noise is a key consideration in airport operations, strictly regulated and highly emphasized by governments worldwide. It impacts the health, learning, cognitive abilities, and asset values of residents near airports. Consequently, low-noise design is becoming a central focus in aircraft design, especially for future Small Hybrid Electric Commuter Aircraft (SHECA) and electric Vertical Take-Off and Landing (eVTOL) aircraft. Current research mostly centers on the basic physical mechanisms of noise propagation, with limited integration with the social costs of airport operations. To bridge this gap, this study proposes to construct a model linking airport noise to potential social costs using an ideal hemispherical noise propagation model and socio-economic data on noise-related impacts. Through specific cases, it estimates the potential social costs associated with SHECA market entry. The findings will inform future site selection and route planning for SHECA and eVTOL take-off and landing sites.