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Aircraft flew through the final approach course and came close (less than standard separation) to a departing aircraft.
| Attributes | |
| ACN | 160839 |
| Time | |
| Date | 199010 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dal |
| State Reference | TX |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | other |
| Make Model Name | Experimental |
| Flight Phase | cruise other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 20 |
| ASRS Report | 160839 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The spc was being vectored to dal from approximately 30 NM northwest of airport. At some point within 20 mi north of dal the ARTS IIIA tracking failed and the spc flew through the dal final and got near the light transport. During the time I was on this position I complained about the beacon reliability to my supervisor and to a tech who came to check on the situation. Alternate beacon channel was selected, but no improvement noted. After the incident I advised my supervisor. I requested to change radar systems or be relieved. Both requests were honored. Ps: this is a recurring problem in this sector and long been acknowledged that the main problem is site location with respect to normal traffic flows. Another common occurrence is that the positions were combined (arrival/departure position combined with that dal final controller position).
Original NASA ASRS Text
Title: ACFT FLEW THROUGH THE FINAL APCH COURSE AND CAME CLOSE (LESS THAN STANDARD SEPARATION) TO A DEPARTING ACFT.
Narrative: THE SPC WAS BEING VECTORED TO DAL FROM APPROX 30 NM NW OF ARPT. AT SOME POINT WITHIN 20 MI N OF DAL THE ARTS IIIA TRACKING FAILED AND THE SPC FLEW THROUGH THE DAL FINAL AND GOT NEAR THE LTT. DURING THE TIME I WAS ON THIS POS I COMPLAINED ABOUT THE BEACON RELIABILITY TO MY SUPVR AND TO A TECH WHO CAME TO CHK ON THE SITUATION. ALTERNATE BEACON CHANNEL WAS SELECTED, BUT NO IMPROVEMENT NOTED. AFTER THE INCIDENT I ADVISED MY SUPVR. I REQUESTED TO CHANGE RADAR SYSTEMS OR BE RELIEVED. BOTH REQUESTS WERE HONORED. PS: THIS IS A RECURRING PROB IN THIS SECTOR AND LONG BEEN ACKNOWLEDGED THAT THE MAIN PROB IS SITE LOCATION WITH RESPECT TO NORMAL TFC FLOWS. ANOTHER COMMON OCCURRENCE IS THAT THE POSITIONS WERE COMBINED (ARR/DEP POS COMBINED WITH THAT DAL FINAL CTLR POS).
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.