Narrative:

Aircraft X was at 110 direct gvq which was about a 050 heading. He suddenly turned to a northwest heading estimated to be about a 340 which [had] him directly in the way of aircraft Y who was direct vwv at 110. I turned aircraft X to a 090 heading in order to keep separation. He said his autopilot shut off; to the controller working the next sector after I switched him. [Also]; my d-side had toledo approach descend aircraft Y.

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Original NASA ASRS Text

Title: ZOB Controller reported an aircraft had an autopilot failure resulting in a conflict with another aircraft.

Narrative: Aircraft X was at 110 direct GVQ which was about a 050 heading. He suddenly turned to a northwest heading estimated to be about a 340 which [had] him directly in the way of Aircraft Y who was direct VWV at 110. I turned Aircraft X to a 090 heading in order to keep separation. He said his autopilot shut off; to the controller working the next sector after I switched him. [Also]; my D-Side had Toledo Approach descend Aircraft Y.

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.