Mdw tower controller reports of IFR conditions at the airport with 70 to 80 knot overtakes on final....

Attributes
ACN	1268015
Time
Date	201506
Local Time Of Day	0601-1200
Place
Locale Reference	MDW.Tower
State Reference	IL
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Medium Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 24
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Speed All Types

Narrative:

ILS runway 4R approach in use. C90 TRACON running approaches. Sia [systems information area] showing IFR 500 broken. No check mark in the visual separation box on the sia. C90 running aircraft tight on final. 70 to 80 knot over takes. After the first aircraft went below 2.5 miles we advised C90 that we were IFR and 500 ceilings. At that moment I saw his lights and provided visual separation with those two. Within minutes they did the same thing; we pulled that aircraft out. 70 knots faster; 2.6 miles just outside the marker; we tried to slow the air carrier but as soon as it approached 2.5 we had to send that aircraft around. This is ongoing.have C90 pay attention to the sia. When we say no on visual separation they should abide by that. When we tell them we are IFR they should do their job and not hand us deals. 23 million passengers last year do not deserve nonprofessional service.

Original NASA ASRS Text

Title: MDW Tower Controller reports of IFR conditions at the airport with 70 to 80 knot overtakes on final. Controller reported that C90 continually ran this operation and should be providing or thinking the Tower will be able to provide visual separation to save the overtakes.

Narrative: ILS Runway 4R approach in use. C90 TRACON running approaches. SIA [Systems Information Area] showing IFR 500 broken. No check mark in the visual separation box on the SIA. C90 running aircraft tight on final. 70 to 80 knot over takes. After the first aircraft went below 2.5 miles we advised C90 that we were IFR and 500 ceilings. At that moment I saw his lights and provided visual separation with those two. Within minutes they did the same thing; we pulled that aircraft out. 70 knots faster; 2.6 miles just outside the marker; we tried to slow the air carrier but as soon as it approached 2.5 we had to send that aircraft around. This is ongoing.Have C90 pay attention to the SIA. When we say no on visual separation they should abide by that. When we tell them we are IFR they should do their job and not hand us deals. 23 million passengers last year do not deserve nonprofessional service.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Mdw tower controller reports of IFR conditions at the airport with 70 to 80 knot overtakes on final. Controller reported that C90 continually ran this operation and should be providing or thinking the tower will be able to provide visual separation to save the overtakes.