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ZFW controller assigned a d-side position failed to properly coordinate with the r-side; a failure that led to a loss of separation event.
| Attributes | |
| ACN | 945993 |
| Time | |
| Date | 201104 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZFW.ARTCC |
| State Reference | TX |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citationjet (C525/C526) - CJ I / II / III / IV |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Bonanza 33 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy |
Narrative:
I was working the d-side for the combined sectors of txk and mlu-left. GGG approach called requesting a higher altitude for aircraft X who was climbing to 10;000 ft. Aircraft Y was at 11;000 ft within 5 miles of the aforementioned aircraft. I confused myself with the airspace thinking aircraft Y was in GGG's airspace. I approved aircraft X climbing to 14;000 ft under the impression that aircraft Y was known traffic and I failed to reference traffic. Aircraft Y was in my airspace [and] GGG's airspace ends at 10;000 ft in the area in which the conflict took place. I did not tell my r-side what I had approved. Aircraft X climbed through aircraft Y's altitude and the conflict alert then began to flash and separation was lost between the two aircraft. No recommendations for prevention. I should have told my r-side my action and had greater situational awareness at the time of the incident.
Original NASA ASRS Text
Title: ZFW Controller assigned a D-Side position failed to properly coordinate with the R-Side; a failure that led to a loss of separation event.
Narrative: I was working the D-Side for the combined sectors of TXK and MLU-L. GGG Approach called requesting a higher altitude for Aircraft X who was climbing to 10;000 FT. Aircraft Y was at 11;000 FT within 5 miles of the aforementioned aircraft. I confused myself with the airspace thinking Aircraft Y was in GGG's airspace. I approved Aircraft X climbing to 14;000 FT under the impression that Aircraft Y was known traffic and I failed to reference traffic. Aircraft Y was in my airspace [and] GGG's airspace ends at 10;000 FT in the area in which the conflict took place. I did not tell my R-Side what I had approved. Aircraft X climbed through Aircraft Y's altitude and the conflict alert then began to flash and separation was lost between the two aircraft. No recommendations for prevention. I should have told my R-Side my action and had greater situational awareness at the time of the incident.
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.