Commercial Fixed Wing
Air Traffic Control Fully Certified
Air Traffic Control Supervisory 5; Air Traffic Control Time Certified In Pos 1 (yrs) 5
Situational Awareness
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Separated Traffic; Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert
Human Factors
As the on duty Operations Supervisor; I was monitoring the position due to Aircraft X traversing the airspace. Aircraft X was direct and approximately level at 11;000 feet. Aircraft Y [was] level at 11;000 feet heading northeast. Aircraft X was switched to Approach on course when I observed Aircraft Y making a north turn. I advised the Radar Controller who was discussing something with the Radar Associate. The Radar Controller then saw the situation and Aircraft Y to turn to a 090 heading. After advising the Radar Controller; I then advised the Radar Associate to call Approach and have Aircraft X descend or turn him west. The Radar Associate did talk to Approach and they descended Aircraft X. Aircraft Y made the turn to 090 degrees. At no time was separation lost between the two aircraft. I advised the next sector to issue a brasher warning to Aircraft Y.
ZOB Supervisor observed an aircraft deviate from their course to a heading that was towards another aircraft and advised the Radar Controller.