Large Transport
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (mon) 6; Air Traffic Control Time Certified In Pos 1 (yrs) 2
Human-Machine Interface; Distraction; Confusion; Communication Breakdown; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Separated Traffic
Procedure; Human Factors
I was working ZMP Sector 42. Denver Center Sector 09 handed off aircraft X and aircraft Y to me at the same altitude on converging courses. The back aircraft was over 30 knots faster than the front aircraft. I had to turn the back aircraft twenty degrees to the left inside of Denver Center's airspace in order to prevent the loss of separation which would have occurred less than 10 miles within my boundary. I received no call from Denver Center that they were going to fix the issue prior to shipping the aircraft to me. I believe if I had not turned the back aircraft we would have had a loss of separation. Denver Center should have had this fixed before they entered my airspace.We get a lot of this from Denver Center. This was the first of 2 incidents that happened in the same day where they hand us unsafe situations. Denver Center need to ensure separation of the aircraft they send to the next sector. This is nearly a daily occurrence with Denver Center.
ZMP Controller reported that Denver Center gave him two aircraft with the second one being faster. Receiving Controller had to turn aircraft 20 degrees left to avoid operational error; but did so inside Denver's airspace without coordination.