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Flight crew of large transport departing bos had near midair collision with commuter type aircraft while still in the TCA.
| Attributes | |
| ACN | 126763 |
| Time | |
| Date | 198910 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : bos |
| State Reference | MA |
| Altitude | msl bound lower : 5400 msl bound upper : 5800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : bos tower : phx |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport |
| Flight Phase | other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 185 flight time total : 7900 flight time type : 745 |
| ASRS Report | 126763 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 8000 flight time type : 350 |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Climbing out of boston after 33L departure, we were issued radar vectors, gradual left turns, to intercept the boston 183 radial. We were climbing to 6000'. As we passed through about 5400' departure called traffic at 11 O'clock. Looked for traffic but unable to spot it with the lights of boston below us. As we climbed through 5800' the traffic passed directly beneath us. We asked the controller his altitude and he replied 5400'. Aircraft appeared to be coming from boston.
Original NASA ASRS Text
Title: FLT CREW OF LGT DEPARTING BOS HAD NMAC WITH COMMUTER TYPE ACFT WHILE STILL IN THE TCA.
Narrative: CLIMBING OUT OF BOSTON AFTER 33L DEP, WE WERE ISSUED RADAR VECTORS, GRADUAL LEFT TURNS, TO INTERCEPT THE BOSTON 183 RADIAL. WE WERE CLIMBING TO 6000'. AS WE PASSED THROUGH ABOUT 5400' DEP CALLED TFC AT 11 O'CLOCK. LOOKED FOR TFC BUT UNABLE TO SPOT IT WITH THE LIGHTS OF BOSTON BELOW US. AS WE CLIMBED THROUGH 5800' THE TFC PASSED DIRECTLY BENEATH US. WE ASKED THE CTLR HIS ALT AND HE REPLIED 5400'. ACFT APPEARED TO BE COMING FROM BOSTON.
Data retrieved from NASA's ASRS site as of August 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.