Airports 4,451 to 4,500
Defiance Memorial Airport
Smithville Municipal Airport
DeKalb Community Hospital Heliport
Battle Creek Health System Helistop
Livingston Municipal Airport
Kettering Health Greene Memorial Hospital Heliport
ProMedica Defiance Regional Hospital Heliport
Clark Regional Medical Center Heliport
Muskegon County Airport
Algona Municipal Airport