Narrative:

I was working aircraft X; level at FL380 at the patterson sector (98). I had issued aircraft X holding instructions at the torrr intersection and the aircraft was still a few miles from entering the hold. Conflict alert began between my northwest bound aircraft X and a southwest bound aircraft Y. Aircraft Y was showing in the descent out of about FL410 with FL350 as an assigned altitude. I checked with the sector in my area (88/78) if they were working aircraft Y. They said they had approved descending with chicago center (ZAU). I then called G33 and asked if they were separating aircraft Y from aircraft X and they said yes. I waited about one more minute before I decided I was not comfortable with the rate of descent from aircraft Y since the two aircraft were directly head-on. I then said over the 'shout' line that I was turning my aircraft X left and they should not go right with aircraft Y. I turned aircraft X 30 degrees left to ensure they would not hit. I believe they achieved vertical separation with about 6.5 miles. Aircraft X then reported that they had received a TCAS alert. G33 never did point out aircraft Y to the patterson sector.

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Original NASA ASRS Text

Title: ZID Controller reports of observing an airborne conflict due to not being comfortable with the situation he was observing. Controller called the other area and told them to not turn their aircraft to the right as he was turning his to the left. Other sector did not point out an aircraft.

Narrative: I was working Aircraft X; level at FL380 at the Patterson sector (98). I had issued Aircraft X holding instructions at the TORRR intersection and the aircraft was still a few miles from entering the hold. Conflict alert began between my northwest bound Aircraft X and a southwest bound Aircraft Y. Aircraft Y was showing in the descent out of about FL410 with FL350 as an assigned altitude. I checked with the sector in my area (88/78) if they were working Aircraft Y. They said they had approved descending with Chicago Center (ZAU). I then called G33 and asked if they were separating Aircraft Y from Aircraft X and they said yes. I waited about one more minute before I decided I was not comfortable with the rate of descent from Aircraft Y since the two aircraft were directly head-on. I then said over the 'shout' line that I was turning my Aircraft X left and they should not go right with Aircraft Y. I turned Aircraft X 30 degrees left to ensure they would not hit. I believe they achieved vertical separation with about 6.5 miles. Aircraft X then reported that they had received a TCAS alert. G33 never did point out Aircraft Y to the Patterson sector.

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.