This issue contains 16 papers on the following aspects of aviation: benefit-cost analysis of airport improvements; impact of airport noise on property values; aviation emissions mitigation; air traffic analysis for forecasting; sensitivity of airline schedules to airport congestion pricing; policy implications of airline performance indicators; estimating flight delay costs; automated measurement of wait times at airport security; validation of runway capacity models; mitigating airport congestion with multimodalism; measuring delay performance in the National Airspace System; statistical characteristics of aircraft arrival tracks; impact of flight delay on air traffic flow; maintenance management of runway pavements; new materials for aircraft arrestor beds; and regional cooperation, coordination, and communication between airports during disasters.