EMB ERJ 145 ER/LR
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 0.5
Confusion; Communication Breakdown; Distraction; Time Pressure; Situational Awareness
ATC Issue All Types; Inflight Event / Encounter Weather / Turbulence; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach
Airspace Structure; Procedure; Human Factors
Aircraft X declared a go-around due to windshear on short final to Runway 27R. As the Local Controller; I issued go-around instructions of runway heading climb to 2;100 feet; which is the MVA in that immediate part of the airspace. There was a heavy jet departure from Runway 28R crossing my traffic's departure path; which I was aiming to stay 1;000 feet below for wake turbulence. Then I advised the other Local Controller; position 3LC; and they coordinated my go-around instructions into their airspace at 5;000 feet and 040 heading. I then issued these instructions to the Aircraft X pilot; no response; then issued a landing clearance to a short final arrival; answered a question about my instructions to my Supervisor on the shout line; then re-issued the turn and climb to the Aircraft X pilot; this time with a read back. By this point in time; Aircraft X was 2 miles off the departure end of the runway; and had entered an airspace with a MVA of 2;500 feet while flying at 2;100 feet. No loss of separation or wake turbulence occurred; flight continued without incident.Ensure that heavy jet traffic are not turned too early toward other runways to protect for possible go-arounds. Advise Supervisor to not use a shout line or perhaps wait longer to inquire the busy controller. Prioritize pilot read backs of critical instructions over other duties.
ORD Tower Controller reported an aircraft conducting a go-around flew below the Minimum Vectoring Altitude because they did not hear their go-around instructions the first time they were issued.