Medium Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 8
Communication Breakdown; Confusion; Distraction; Situational Awareness
ATC Issue All Types; Airspace Violation All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors; Procedure
Training was in progress at the FARMM/MALTA (74/77) sector. Departure traffic from C90 was a little unusual; where they were being vectored into the arrival sector (FARMM-74) before being turned back into the departure sector (MALTA-77). There were no arrivals into ORD so it really wasn't much of a factor. Trainee gets a call from RFD approach asking for control on Aircraft X. This is when the data block for Aircraft X populated on our scope at 12000. The aircraft was around the FYTTE waypoint at 12000 and our altitudes are 11000-FL230. From what I can assume is that C90 also vectored that departure to the North; just like all the other aircraft; and climbed the aircraft to 12000; which is FARMMs airspace. Had the aircraft stayed in the departure sector; it never would have been a factor because MALTA owns 13000-FL230.C90 needs to be more aware of where they are vectoring aircraft and what the altitudes are in the surrounding sectors.
ZAU Center Controller reported that a C90 TRACON Controller climbed an aircraft into the Center's airspace without coordination.