The study’s purpose was to examine and update the research concepts and measurement issues associated with assessing the economic impact of tourism special events. Specifically examined were the issues with the implementation of economic impact studies in regard to: 1) non-attendee analysis; 2) defining “locals” and “non-locals” within a region; 3) the impact of VFRs within the local markets; 4) sampling techniques – including registration versus intercept sampling; 5) the estimation of purchasing within versus outside the region; 6) early versus late registration sampling; and 7) recall – length of time to run EIS post event survey. These measures were associated with the Westfield International Air Show (WIAS) conducted in 2010. Recommendations and findings for conducting a special event economic impact and significance analysis are made