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ARTCC controller has attention directed to one part of his sector, missing loss of separation between 2 aircraft on the other side of his sector.
| Attributes | |
| ACN | 406709 |
| Time | |
| Date | 199806 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lfd |
| State Reference | MI |
| Altitude | msl bound lower : 19000 msl bound upper : 21000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 4 |
| ASRS Report | 406709 |
| Events | |
| Anomaly | non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15000 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft deviation on inbound fix to dtw. We were receiving aircraft from other fixes that couldn't get in at these fixes. Western side of sector has about 4-5 aircraft at FL190 and FL210. Trying to separate those first. Oversight occurred with aircraft #1 and aircraft #2 at same time. 13 aircraft on frequency at time of incident.
Original NASA ASRS Text
Title: ARTCC CTLR HAS ATTN DIRECTED TO ONE PART OF HIS SECTOR, MISSING LOSS OF SEPARATION BTWN 2 ACFT ON THE OTHER SIDE OF HIS SECTOR.
Narrative: ACFT DEV ON INBOUND FIX TO DTW. WE WERE RECEIVING ACFT FROM OTHER FIXES THAT COULDN'T GET IN AT THESE FIXES. WESTERN SIDE OF SECTOR HAS ABOUT 4-5 ACFT AT FL190 AND FL210. TRYING TO SEPARATE THOSE FIRST. OVERSIGHT OCCURRED WITH ACFT #1 AND ACFT #2 AT SAME TIME. 13 ACFT ON FREQ AT TIME OF INCIDENT.
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.