In Search of Final Approach Noise Mitigation Procedures

Continuous descent approaches and area navigation noise abatement arrival procedures have demonstrated effectiveness in mitigating sound levels around airports. However, these strategies focus primarily on increasing altitude and avoiding areas sensitive to noise, often neglecting the final approach phase where conventional procedures remain dominant. This study presents a data-driven analysis of noise mitigation strategies during the final approach phase. Using two sets of flight recorder data, totaling more than 1000 landings with the Airbus A321, variations in flight patterns and their impact on noise emissions are statistically evaluated. By focusing on the relationship between deceleration, landing gear deployment, and noise output, a subset of low-power/low-drag approach profiles are identified that result in substantial noise reductions. The current analysis suggests that nearly 20% of the observed flights followed this quieter profile, offering a potential framework to refine approach procedures. The findings provide empirical evidence supporting data-driven modifications to current approach practices to achieve noise reductions without altering existing regulatory frameworks.