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VFR small transport in high performance maneuver came in close proximity to air carrier in descent. Traffic advisory given by bur approach controller.
| Attributes | |
| ACN | 175953 |
| Time | |
| Date | 199104 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : vny |
| State Reference | CA |
| Altitude | msl bound lower : 6000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bur |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Transport |
| Flight Phase | descent other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 190 flight time total : 10200 flight time type : 9000 |
| ASRS Report | 175953 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : far |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After crossing janny on the lynxx 6 arrival we were on radar vectors from bur approach. We were at 6000' heading 210 degrees when the controller called traffic at 10 O'clock, 8500', heading northwest descending. I saw a light twin descending toward us, but it looked like it would pass over us. The controller then said the target was coming down like a rock, 'you are cleared to do whatever you need to.' at this time the twin was in a steep descending left turn and getting close. I turned away in a right turn. The first officer and I idented the aircraft as a twin small transport about 500' away. When I talked to the controller he said our targets had merged on his scope. This incident demonstrates the need for good controllers, which we had, and good radar. At reporting xponders on all aircraft are very important. I think a reliable TCAS system will be very helpful.
Original NASA ASRS Text
Title: VFR SMT IN HIGH PERFORMANCE MANEUVER CAME IN CLOSE PROX TO ACR IN DESCENT. TRAFFIC ADVISORY GIVEN BY BUR APCH CTLR.
Narrative: AFTER XING JANNY ON THE LYNXX 6 ARR WE WERE ON RADAR VECTORS FROM BUR APCH. WE WERE AT 6000' HDG 210 DEGS WHEN THE CTLR CALLED TFC AT 10 O'CLOCK, 8500', HDG NW DSNDING. I SAW A LIGHT TWIN DSNDING TOWARD US, BUT IT LOOKED LIKE IT WOULD PASS OVER US. THE CTLR THEN SAID THE TARGET WAS COMING DOWN LIKE A ROCK, 'YOU ARE CLRED TO DO WHATEVER YOU NEED TO.' AT THIS TIME THE TWIN WAS IN A STEEP DSNDING LEFT TURN AND GETTING CLOSE. I TURNED AWAY IN A RIGHT TURN. THE F/O AND I IDENTED THE ACFT AS A TWIN SMT ABOUT 500' AWAY. WHEN I TALKED TO THE CTLR HE SAID OUR TARGETS HAD MERGED ON HIS SCOPE. THIS INCIDENT DEMONSTRATES THE NEED FOR GOOD CTLRS, WHICH WE HAD, AND GOOD RADAR. AT RPTING XPONDERS ON ALL ACFT ARE VERY IMPORTANT. I THINK A RELIABLE TCAS SYS WILL BE VERY HELPFUL.
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.