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Crossing traffic situation creates a potential conflict less than standard separation during approach procedure STAR.
| Attributes | |
| ACN | 191393 |
| Time | |
| Date | 199110 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl |
| State Reference | GA |
| Altitude | msl bound lower : 8300 msl bound upper : 8800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : bgr |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other arrival star : star enroute : on vectors enroute airway : atl |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 180 flight time total : 8100 flight time type : 180 |
| ASRS Report | 191393 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
On the sinca arrival into atl at 12000 ft and 250 KTS approach control gave us a descent to 8000 ft MSL as we crossed over canuk intersection on the arrival. At approximately 8800 ft, approach called traffic at our 12 O'clock position, 3 mi at 8500 ft. Almost simultaneously, TCASII 'TA' sounded. I reported no traffic in sight to the controller. He then gave us a right turn to a 320 degree heading. In the turn, at approximately 8300 ft, I spotted the traffic visually 200 ft above and about 1 mi moving from right to left across our nose. TCASII 'monitor vertical speed' alert sounded and I reported traffic to approach. Remainder of approach was normal. No evasive action was necessary. As a side note: TCASII operated as advertised and enabled us to spot the traffic sooner than we might have without it. I'm glad we were on an aircraft that had it installed!
Original NASA ASRS Text
Title: XING TFC SITUATION CREATES A POTENTIAL CONFLICT LTSS DURING APCH PROC STAR.
Narrative: ON THE SINCA ARR INTO ATL AT 12000 FT AND 250 KTS APCH CTL GAVE US A DSCNT TO 8000 FT MSL AS WE CROSSED OVER CANUK INTXN ON THE ARR. AT APPROX 8800 FT, APCH CALLED TFC AT OUR 12 O'CLOCK POS, 3 MI AT 8500 FT. ALMOST SIMULTANEOUSLY, TCASII 'TA' SOUNDED. I RPTED NO TFC IN SIGHT TO THE CTLR. HE THEN GAVE US A R TURN TO A 320 DEG HDG. IN THE TURN, AT APPROX 8300 FT, I SPOTTED THE TFC VISUALLY 200 FT ABOVE AND ABOUT 1 MI MOVING FROM R TO L ACROSS OUR NOSE. TCASII 'MONITOR VERT SPD' ALERT SOUNDED AND I RPTED TFC TO APCH. REMAINDER OF APCH WAS NORMAL. NO EVASIVE ACTION WAS NECESSARY. AS A SIDE NOTE: TCASII OPERATED AS ADVERTISED AND ENABLED US TO SPOT THE TFC SOONER THAN WE MIGHT HAVE WITHOUT IT. I'M GLAD WE WERE ON AN ACFT THAT HAD IT INSTALLED!
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.