Review of the Quota Count (QC) System: Re-analysis of the Differences between Arrivals and Departures

Review of the Quota Count (QC) System: Re-analysis of the Differences between Arrivals and Departures. This report describes a study that was undertaken on behalf of the Department for Transport to evaluate the Quota Count (QC) system methodology using current data and noise modelling practices. The results indicate that the QC system remains appropriate as a practical means of classifying the noise impact of arriving and departing aircraft.