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ZAU controller described a loss of separation event when controller reversed the altitude crossing assignments; resulting in the conflict.
| Attributes | |
| ACN | 877222 |
| Time | |
| Date | 201003 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZAU.ARTCC |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict |
Narrative:
Trainee assigned crossing to air carrier X; cross benky @ 110; and to air carrier Y cross 10 south of plano @ 120. As aircraft neared each other the controller flipped the altitudes and issued turns. With j-ball they appeared to be at 5 mi and 700 ft.
Original NASA ASRS Text
Title: ZAU Controller described a loss of separation event when Controller reversed the altitude crossing assignments; resulting in the conflict.
Narrative: Trainee assigned crossing to Air Carrier X; Cross Benky @ 110; and to Air Carrier Y cross 10 South of Plano @ 120. As aircraft neared each other the Controller flipped the altitudes and issued turns. With J-Ball they appeared to be at 5 MI and 700 FT.
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.