Noise calls are received via telephone hotline (425-284-0500) or through the airport online noise complaint form. Upon receipt, all complaints are investigated. The FAA retains radar data for three days before providing it to the airport’s AIRSCENE noise monitoring system. Airport staff uses the AIRSCENE data and other sources to help identify which operations generated the complaint. This information is then used to generate monthly, quarterly, and annual report summaries (listed below).