Airports 501 to 550
Presence St Mary's Hospital - Kankakee Heliport
UChicago Medicine Ingalls Memorial Heliport
NW Lake Forest Hospital-Grayslake Heliport
Presence Sts Mary and Elizabeth Medical Center Heliport
John H. Stroger Hospital of Cook County Heliport
SSM Health St. Mary's Hospital-Jansville Heliport
Lake Lawn Airport
Chicago Helicopter Experience Heliport
St James Hospital and Health Centers Heliport
O John Clark Restricted Landing Area