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A11 controller involved in operational error with B747 and B190. Controller concerned with breakdown of intrafac coordination for a workable feed from 2 other sectors.
| Attributes | |
| ACN | 495408 |
| Time | |
| Date | 200012 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : anc.airport |
| State Reference | AK |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Aircraft 1 | |
| Controlling Facilities | tracon : a11.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 24l |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | pilot : private |
| Experience | controller limited radar : 8 controller non radar : 4 controller radar : 8 flight time total : 300 |
| ASRS Report | 495408 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : turbulence non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 3000 vertical : 0 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
B747 (aircraft X) was inbound to anc from southwest, and was part of a string of heavies inbound. B190 (aircraft Y) was inbound from northwest and was being vectored to downwind. I had been putting all heavies from southwest on the localizer, but forgot to do so with this one. The B747 went through localizer and was headed toward B190. I tried to apply visual separation, but it might have been too late. There was a lot of turbulence in the area, and the 2 feeder sectors weren't really working together to help me with holes, but the fault was all mine.
Original NASA ASRS Text
Title: A11 CTLR INVOLVED IN OPERROR WITH B747 AND B190. CTLR CONCERNED WITH BREAKDOWN OF INTRAFAC COORD FOR A WORKABLE FEED FROM 2 OTHER SECTORS.
Narrative: B747 (ACFT X) WAS INBOUND TO ANC FROM SW, AND WAS PART OF A STRING OF HEAVIES INBOUND. B190 (ACFT Y) WAS INBOUND FROM NW AND WAS BEING VECTORED TO DOWNWIND. I HAD BEEN PUTTING ALL HEAVIES FROM SW ON THE LOC, BUT FORGOT TO DO SO WITH THIS ONE. THE B747 WENT THROUGH LOC AND WAS HEADED TOWARD B190. I TRIED TO APPLY VISUAL SEPARATION, BUT IT MIGHT HAVE BEEN TOO LATE. THERE WAS A LOT OF TURB IN THE AREA, AND THE 2 FEEDER SECTORS WEREN'T REALLY WORKING TOGETHER TO HELP ME WITH HOLES, BUT THE FAULT WAS ALL MINE.
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.