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ZID ARTCC radar controller while attempting to vector aircraft around traffic at the same altitude for spacing, turned back too soon resulting in a loss of separation.
| Attributes | |
| ACN | 531141 |
| Time | |
| Date | 200111 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : vhp.vortac |
| State Reference | IN |
| Altitude | msl single value : 27000 |
| Environment | |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 3 controller non radar : 2 controller radar : 11 |
| ASRS Report | 531141 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action none taken : detected after the fact |
| Miss Distance | horizontal : 18000 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was being vectored to miss other traffic and ended up appearing to lose separation on the back side of air carrier Y flight.
Original NASA ASRS Text
Title: ZID ARTCC RADAR CTLR WHILE ATTEMPTING TO VECTOR ACFT AROUND TFC AT THE SAME ALT FOR SPACING, TURNED BACK TOO SOON RESULTING IN A LOSS OF SEPARATION.
Narrative: ACR X WAS BEING VECTORED TO MISS OTHER TFC AND ENDED UP APPEARING TO LOSE SEPARATION ON THE BACK SIDE OF ACR Y FLT.
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.