Narrative:

I had just taken msn approach airspace. I had 3 aircraft inbound to msn. The first one; crj-900; was assigned direct ozmix and a descent to 030 by msn approach before they closed. I immediately recognized I needed to turn him out farther from ozmix and issued the turn. Once he was level at 030; I realized I would need him at 036 as per the approach plate. The MVA in the area he was flying was 030 so everything was fine and I issued a climb back up to 036. The pilot questioned the climb and I explained that I have different rules than an approach control and I did in fact need him to climb back up 600 feet. He did and I was able to issue the approach clearance to ILS 36. I had 2 other aircraft I was vectoring to set up for the ILS 36. I had an air carrier Y aircraft at 040 joining the localizer and was waiting for a down time/cancellation on crj-900 before I issued the approach clearance to air carrier Y aircraft. I then saw crj-900 reacquire radar and climbed up to 022 and did a hard left turn coming back around the airport. He did not contact me with his intentions nor did he execute the proper missed approach procedure. Not knowing what he would do; I climbed air carrier Y aircraft to 050 and turned to a 040 heading. My third aircraft was still at 080 and was now being vectored through the localizer. At the same time; I had a VFR helicopter call at 020 approximately 3 miles west of msn; the same area crj-900 was now flying. I issued traffic to the VFR. The only communication I had with crj-900 from then on was when he cancelled IFR on my frequency at approximately XA12. I issued the brasher warning but got no response. I called crj-900 approximately 3 more times trying to get an acknowledgment; but never received any. Having received his cancellation I was able to turn both other arrivals back around and line them up for their approaches. My d-side called the supervisor to report the pilot deviation.I should have stopped the initial descent to 030 from msn approach and issued 036 right away. I don't believe the climb back up made a difference to him missing his approach though; as all aircraft start that approach at 036. The pilot should have done the proper missed approach procedure and contacted me immediately to advise his intentions.

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Original NASA ASRS Text

Title: ZAU controllers reported a CRJ-900 executed a missed approach; but failed to notify ATC promptly; did not fly the published procedure; instead maneuvered VFR below MVA; NORDO; causing delays and a conflict.

Narrative: I had just taken MSN approach airspace. I had 3 aircraft inbound to MSN. The first one; CRJ-900; was assigned direct OZMIX and a descent to 030 by MSN approach before they closed. I immediately recognized I needed to turn him out farther from OZMIX and issued the turn. Once he was level at 030; I realized I would need him at 036 as per the approach plate. The MVA in the area he was flying was 030 so everything was fine and I issued a climb back up to 036. The pilot questioned the climb and I explained that I have different rules than an approach control and I did in fact need him to climb back up 600 feet. He did and I was able to issue the approach clearance to ILS 36. I had 2 other aircraft I was vectoring to set up for the ILS 36. I had an Air Carrier Y aircraft at 040 joining the localizer and was waiting for a down time/cancellation on CRJ-900 before I issued the approach clearance to Air Carrier Y aircraft. I then saw CRJ-900 reacquire radar and climbed up to 022 and did a hard left turn coming back around the airport. He did not contact me with his intentions nor did he execute the proper missed approach procedure. Not knowing what he would do; I climbed Air Carrier Y aircraft to 050 and turned to a 040 heading. My third aircraft was still at 080 and was now being vectored through the localizer. At the same time; I had a VFR helicopter call at 020 approximately 3 miles west of MSN; the same area CRJ-900 was now flying. I issued traffic to the VFR. The only communication I had with CRJ-900 from then on was when he cancelled IFR on my frequency at approximately XA12. I issued the brasher warning but got no response. I called CRJ-900 approximately 3 more times trying to get an acknowledgment; but never received any. Having received his cancellation I was able to turn both other arrivals back around and line them up for their approaches. My d-side called the supervisor to report the pilot deviation.I should have stopped the initial descent to 030 from MSN approach and issued 036 right away. I don't believe the climb back up made a difference to him missing his approach though; as all aircraft start that approach at 036. The pilot should have done the proper missed approach procedure and contacted me immediately to advise his intentions.

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.