The Exploratory Research Plan (ERP) is the document that describes the way validation activities will be prepared and executed. The purpose of this document is to be used as a guideline for the project when conducting validation activities. The validation activities described in here will validate the proposed MUSE solution, which has been defined as a U-space Environmental and Social Impact Assessment Framework, with the aim of serving as an enabler for a future U-space service focused on optimising the social and environmental performance of Urban Air Mobility (UAM) operations.