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Enroute controller described a loss of separation event when the r-side controller issued an altitude assignment to the wrong aircraft; similar call signs were in play.
| Attributes | |
| ACN | 993905 |
| Time | |
| Date | 201202 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | MD-82 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Cessna Citation Sovereign (C680) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict |
Narrative:
The r-side controller climbed a C680 to FL310 to go underneath a MD82. There was a nxxx also on frequency that had been leveled at FL310 for arrival traffic. The r-side climbed nyxx to FL370 but meant to climb nxxx. I did not hear the clearance to be wrong. An MD82 and nyxx responded to a TCAS and the r-side responded.
Original NASA ASRS Text
Title: Enroute Controller described a loss of separation event when the R-Side Controller issued an altitude assignment to the wrong aircraft; similar call signs were in play.
Narrative: The R-Side controller climbed a C680 to FL310 to go underneath a MD82. There was a NXXX also on frequency that had been leveled at FL310 for arrival traffic. The R-Side climbed NYXX to FL370 but meant to climb NXXX. I did not hear the clearance to be wrong. An MD82 and NYXX responded to a TCAS and the R-Side responded.
Data retrieved from NASA's ASRS site as of July 2013 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.