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Ind TRACON controller experienced operational error when failing to issue downwind turn to arrival aircraft.
| Attributes | |
| ACN | 666953 |
| Time | |
| Date | 200508 |
| Place | |
| Locale Reference | airport : ind.airport |
| State Reference | IN |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ind.tracon tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : ind.tracon |
| Operator | common carrier : air taxi |
| Make Model Name | Super King Air 200 HDC |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 6 |
| ASRS Report | 666953 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 12000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
DC9 and BE20 were being vectored to final. BE20 was not issued a turn to the downwind and overflew ind and became a conflict with DC9 on the opposite downwind. As separation was being lost; BE20 was vectored away from DC9. The conflict alert did not sound until after separation had been regained. Contributing factors: volume of traffic; frequency congestion; and overall workload.
Original NASA ASRS Text
Title: IND TRACON CTLR EXPERIENCED OPERROR WHEN FAILING TO ISSUE DOWNWIND TURN TO ARR ACFT.
Narrative: DC9 AND BE20 WERE BEING VECTORED TO FINAL. BE20 WAS NOT ISSUED A TURN TO THE DOWNWIND AND OVERFLEW IND AND BECAME A CONFLICT WITH DC9 ON THE OPPOSITE DOWNWIND. AS SEPARATION WAS BEING LOST; BE20 WAS VECTORED AWAY FROM DC9. THE CONFLICT ALERT DID NOT SOUND UNTIL AFTER SEPARATION HAD BEEN REGAINED. CONTRIBUTING FACTORS: VOLUME OF TFC; FREQ CONGESTION; AND OVERALL WORKLOAD.
Data retrieved from NASA's ASRS site as of January 2009 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.