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During sector decombining, an aircraft data tag was dropped, resulting in a conflict with a descending CL60 and an en route C525.
| Attributes | |
| ACN | 528073 |
| Time | |
| Date | 200110 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : abb.vortac |
| State Reference | IN |
| Altitude | msl single value : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | Challenger CL600 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Citationjet, C525/C526 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 9 |
| ASRS Report | 528073 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | flight crew : took evasive action none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Intra Facility Coordination Failure |
Narrative:
Sectors were just split. I feel if we would have waited an additional 5-10 mins, things would have split more smoothly and this may have been avoided. XXXX data block got dropped after the split, while it was still in the other sector. XXXX called on and was descended to FL210. Conflict activated with YYYY, which was somehow dropped. Separation was lost.
Original NASA ASRS Text
Title: DURING SECTOR DECOMBINING, AN ACFT DATA TAG WAS DROPPED, RESULTING IN A CONFLICT WITH A DSNDING CL60 AND AN ENRTE C525.
Narrative: SECTORS WERE JUST SPLIT. I FEEL IF WE WOULD HAVE WAITED AN ADDITIONAL 5-10 MINS, THINGS WOULD HAVE SPLIT MORE SMOOTHLY AND THIS MAY HAVE BEEN AVOIDED. XXXX DATA BLOCK GOT DROPPED AFTER THE SPLIT, WHILE IT WAS STILL IN THE OTHER SECTOR. XXXX CALLED ON AND WAS DSNDED TO FL210. CONFLICT ACTIVATED WITH YYYY, WHICH WAS SOMEHOW DROPPED. SEPARATION WAS LOST.
Data retrieved from NASA's ASRS site as of July 2007 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.