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A widebody transport aircraft enroute at FL260 with tbpb ATC experienced a TCAS RA with unreported large transport aircraft traffic.
| Attributes | |
| ACN | 817115 |
| Time | |
| Date | 200812 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : tbpb.airport |
| State Reference | FO |
| Altitude | msl single value : 26000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 129 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 75 flight time total : 14000 flight time type : 3000 |
| ASRS Report | 817115 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : relief pilot |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 8600 flight time type : 6100 |
| ASRS Report | 817362 |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Northbound on UA632; tbpb (bgi) to ZZZ; level at FL260. Approximate position bgi 345 degree radial at 76 DME. Received TCAS TA. Traffic at 12:30 o'clock position descending. As traffic got closer; I started a left turn (to the west) to avoid conflicting traffic. First officer told ATC that we were in a left turn. ATC came back with; 'turn right 090 degrees.' we again told them we were in a left turn. At this point we received a TA/RA which commanded a 2000 FPM rate of climb. I followed the TCAS command as per operating manual. I climbed to approximately FL266; at which point the 'clear of conflict' audio could be heard. Aircraft was promptly returned to FL260 and course centerline. We believe other aircraft to be a large transport aircraft.
Original NASA ASRS Text
Title: A widebody transport aircraft enroute at FL260 with TBPB ATC experienced a TCAS RA with unreported large transport aircraft traffic.
Narrative: Northbound on UA632; TBPB (BGI) to ZZZ; level at FL260. Approximate position BGI 345 degree radial at 76 DME. Received TCAS TA. Traffic at 12:30 o'clock position descending. As traffic got closer; I started a left turn (to the west) to avoid conflicting traffic. First Officer told ATC that we were in a left turn. ATC came back with; 'Turn right 090 degrees.' We again told them we were in a left turn. At this point we received a TA/RA which commanded a 2000 FPM rate of climb. I followed the TCAS command as per Operating Manual. I climbed to approximately FL266; at which point the 'clear of conflict' audio could be heard. Aircraft was promptly returned to FL260 and course centerline. We believe other aircraft to be a large transport aircraft.
Data retrieved from NASA's ASRS site as of May 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.