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ZID controller does not issue corrected sequencing route and aircraft conflicts with another descending aircraft.
| Attributes | |
| ACN | 537592 |
| Time | |
| Date | 200201 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : iiu.vortac |
| State Reference | KY |
| Altitude | msl bound lower : 29000 msl bound upper : 31000 |
| Environment | |
| Weather Elements | Turbulence |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 4.5 controller radar : 1 controller time certified in position1 : 2.5 flight time total : 21 |
| ASRS Report | 537592 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : turbulence non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 25200 vertical : 1200 |
| Supplementary | |
| Problem Areas | Weather ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
Air carrier X was northeast bna departure climbing to FL290 requesting FL410. Air carrier Y was an ord inbound at FL310, who had been on a vector and routed back over iiu. The okk fix was in the flight plan, but not issued. Air carrier X was issued a turn to clear and climb away from air carrier Y. When air carrier Y passed iiu and turned for the next fix (vhp -- not okk) that is what created the loss of separation.
Original NASA ASRS Text
Title: ZID CTLR DOES NOT ISSUE CORRECTED SEQUENCING RTE AND ACFT CONFLICTS WITH ANOTHER DSNDING ACFT.
Narrative: ACR X WAS NE BNA DEP CLBING TO FL290 REQUESTING FL410. ACR Y WAS AN ORD INBOUND AT FL310, WHO HAD BEEN ON A VECTOR AND ROUTED BACK OVER IIU. THE OKK FIX WAS IN THE FLT PLAN, BUT NOT ISSUED. ACR X WAS ISSUED A TURN TO CLR AND CLB AWAY FROM ACR Y. WHEN ACR Y PASSED IIU AND TURNED FOR THE NEXT FIX (VHP -- NOT OKK) THAT IS WHAT CREATED THE LOSS OF SEPARATION.
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.