To achieve ambitious goals for air quality research, raptor will undertake an in-depth review of available literature to assess knowledge gaps.This will include non-volatile nvpm measurement techniques & corrections and their associated uncertainties as these directly impact modelling studies of local air quality and inform aircraft-induced pm related toxicity and health effects. Findings will be communicated in an open access database, and website targeted to key stakeholders including policy makers, regulators and the public; highlighting interdependencies between the measurements, modelling and health disciplines. RAPTOR will forge synergistic links with existing national, EU and international projects to ensure a high degree of additionality and provide access to desensitised proprietary data. RAPTOR will also generate new data using a representative combustor rig to assess uncertainty of the current CAEP/11 nvpm standards, utilising two reference icao appendix 7-compliant nvpm systems.