USCG FIR WLB 213 (U.S. Coast Guard) The acronym “FIR” stands for “Flight Information Region,” which is an airspace area where the U.S. Federal Aviation Administration (FAA) or foreign equivalent provides flight data service to aircraft in flight. WLB 213 specifically refers to a Flight Information Region within the jurisdiction of the United States Coast Guard (USCG). This region encompasses a designated geographical area, typically extending over water or remote land areas, where the USCG plays a crucial role in air traffic control, search and rescue missions, law enforcement, and general maritime safety. The USCG FIR WLB 213 operates under established international air traffic management regulations to ensure safe and efficient navigation for aircraft within its boundaries.