Amendment of Chicago Class B and Chicago Class C Airspace; Chicago, IL

This action amends the Chicago, IL, Class B airspace area description by changing references for defining the center point of the Chicago Class B airspace from the Chicago O'Hare VHF Omnidirectional Range/Distance Measuring Equipment (VOR/DME) to ``Point of Origin.'' The ``Point of Origin'' uses the same geographic coordinates as the Chicago O'Hare VOR/DME location. This action also amends the Chicago Midway Airport, IL, Class C airspace description by changing the reference for defining a portion of the Class C airspace boundary from using the Chicago O'Hare VOR/DME to using the geographic coordinates of the Chicago O'Hare VOR/DME instead. The FAA is taking this action due to the planned decommissioning of the Chicago O'Hare VOR/DME. Additionally, the Chicago Class B and Chicago Midway Airport Class C airspace descriptions are edited further to reflect the Chicago Midway International Airport name change to match the current information in the FAA's aeronautical database, and the Chicago Midway Airport Class C airspace designation is amended to remove the airport name from the airspace designation to comply with FAA regulatory guidance. These changes are editorial only and do not alter the current charted boundaries, altitudes, or ATC procedures for the Chicago Class B or the Chicago Midway International Airport Class C airspace areas.