Pilots and ZOB controller describe conflict event when ATC attempted to provide required miles in tr...

Narrative:

I was working rav-right during morning dtw push with 15 mit to dtw. Air carrier X was an overflight from east to west at fl 300. I took a handoff from I87 on 2 dtw arrivals air carrier Y at fl 290 and air carrier Z at FL300 that were stacked. I needed to get mit on the aircraft so I turned air carrier Y to a 280 heading. I turned air carrier Z to a 050 heading to get the spacing that I needed. I went back to my other dtw spacing to get the 15 mit on 3 other flights and overlooked that I had turned air carrier Z into air carrier X both at fl 300. When I came back to both aircraft I saw that they were in conflict about 1 second before the conflict alert went off. Before I could make a transmission air carrier Z stated he was responding to a TCAS alert and began climbing. I turned the air carrier X just before he began a TCAS maneuver in a decsent. When air carrier Z climbed for his TCAS resolution he climbed out of my stratum and into the lor sector. I advised lor sector that air carrier Z reacted to a TCAS resolution. Recommendation; ZID was not required to give any mit during this push. Mit from them would have helped since we have twt fix to space dtw arrivals.

Original NASA ASRS Text

Title: Pilots and ZOB controller describe conflict event when ATC attempted to provide required miles in trail for DTW; the flight crew reporters providing the cockpit perspective of the conflict.

Narrative: I was working RAV-R during morning DTW push with 15 MIT to DTW. Air Carrier X was an overflight from East to West at FL 300. I took a handoff from I87 on 2 DTW arrivals Air Carrier Y at FL 290 and Air Carrier Z at FL300 that were stacked. I needed to get MIT on the aircraft so I turned Air Carrier Y to a 280 heading. I turned Air Carrier Z to a 050 heading to get the spacing that I needed. I went back to my other DTW spacing to get the 15 MIT on 3 other flights and overlooked that I had turned Air Carrier Z into Air Carrier X both at FL 300. When I came back to both aircraft I saw that they were in conflict about 1 second before the conflict alert went off. Before I could make a transmission Air Carrier Z stated he was responding to a TCAS alert and began climbing. I turned the Air Carrier X just before he began a TCAS maneuver in a decsent. When Air Carrier Z climbed for his TCAS resolution he climbed out of my stratum and into the LOR sector. I advised LOR sector that Air Carrier Z reacted to a TCAS Resolution. Recommendation; ZID was not required to give any MIT during this push. MIT from them would have helped since we have twt fix to space DTW arrivals.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	863463
Time
Date	200912
Local Time Of Day	1201-1800
Place
Locale Reference	ZOB.ARTCC
State Reference	OH
Aircraft 1
Make Model Name	Regional Jet 700 ER/LR (CRJ700)
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	None
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Airspace Violation All Types Conflict Airborne Conflict

Pilots and ZOB controller describe conflict event when ATC attempted to provide required miles in trail for dtw; the flight crew reporters providing the cockpit perspective of the conflict.