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ZMP center controller reported that the adjacent center ZDV transferred an aircraft to their frequency without a proper handoff; resulting in an airborne conflict.
| Attributes | |
| ACN | 1702928 |
| Time | |
| Date | 201911 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZMP.ARTCC |
| State Reference | MN |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 26 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy |
Narrative:
I was working a radar sector and a D side (radar assist) had just sat down next to me to help. Aircraft X checked on level at 37;000 feet. I scanned my scope and didn't see a data block with that aircraft. I displayed a route using the call sign and noticed it was coming from west of my airspace; but it was off my screen. I told aircraft X to go back to his previous frequency. Because he sounded a little confused I expanded my radar screen and saw his data block approximately 50 miles west of the center boundary. His data block showed FL370 descending to FL350; but he checked on level at 37;000 feet. I immediately told him to stay on the frequency. His data block started to flash with aircraft Y also level 37;000 feet. My D side began to call the adjacent sector to advise them we were going to descend aircraft X to 35;000 feet. I was able to descend aircraft X to keep separation. Remember aircraft X was transferred to my frequency without a handoff.
Original NASA ASRS Text
Title: ZMP Center Controller reported that the adjacent Center ZDV transferred an aircraft to their frequency without a proper handoff; resulting in an airborne conflict.
Narrative: I was working a radar sector and a D Side (Radar Assist) had just sat down next to me to help. Aircraft X checked on level at 37;000 feet. I scanned my scope and didn't see a data block with that aircraft. I displayed a route using the call sign and noticed it was coming from west of my airspace; but it was off my screen. I told Aircraft X to go back to his previous frequency. Because he sounded a little confused I expanded my radar screen and saw his data block approximately 50 miles west of the Center boundary. His data block showed FL370 descending to FL350; but he checked on level at 37;000 feet. I immediately told him to stay on the frequency. His data block started to flash with Aircraft Y also level 37;000 feet. My D Side began to call the adjacent sector to advise them we were going to descend Aircraft X to 35;000 feet. I was able to descend Aircraft X to keep separation. Remember Aircraft X was transferred to my frequency without a handoff.
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.