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A B737 turns off course to avoid small aircraft NORAC traffic climbing through 17000 ft that was not called out by ATC. TCASII alerted the crew 46 mi southwest of tul, ok.
| Attributes | |
| ACN | 460811 |
| Time | |
| Date | 200001 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| State Reference | OK |
| Altitude | msl single value : 17000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : vacating altitude |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 150 flight time total : 7195 |
| ASRS Report | 460811 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5000 flight time type : 1200 |
| ASRS Report | 460810 |
| Events | |
| Anomaly | conflict : airborne critical inflight encounter other non adherence : required legal separation non adherence : far other spatial deviation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 6000 vertical : 0 |
| Supplementary | |
| Problem Areas | Airspace Structure Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
On climb out from okc, intermediate leveloff at 17000 ft MSL for opposite traffic at FL180. Noticed opposite direction target on TCASII at 12 mi, climbing through 16000 ft MSL, not the traffic called by ATC. That target reached 17000 ft, and we inquired with controller, who acknowledged the traffic on her radar. We made a 45 degree left turn off course and advised the controller. We received a TCASII RA and obtained visual contact with the traffic which passed about 1 mi to the right at our altitude. Without turning, our aircraft would have passed at the same altitude with little or no separation. The aircraft appeared to be a single engine retractable.
Original NASA ASRS Text
Title: A B737 TURNS OFF COURSE TO AVOID SMA NORAC TFC CLBING THROUGH 17000 FT THAT WAS NOT CALLED OUT BY ATC. TCASII ALERTED THE CREW 46 MI SW OF TUL, OK.
Narrative: ON CLBOUT FROM OKC, INTERMEDIATE LEVELOFF AT 17000 FT MSL FOR OPPOSITE TFC AT FL180. NOTICED OPPOSITE DIRECTION TARGET ON TCASII AT 12 MI, CLBING THROUGH 16000 FT MSL, NOT THE TFC CALLED BY ATC. THAT TARGET REACHED 17000 FT, AND WE INQUIRED WITH CTLR, WHO ACKNOWLEDGED THE TFC ON HER RADAR. WE MADE A 45 DEG L TURN OFF COURSE AND ADVISED THE CTLR. WE RECEIVED A TCASII RA AND OBTAINED VISUAL CONTACT WITH THE TFC WHICH PASSED ABOUT 1 MI TO THE R AT OUR ALT. WITHOUT TURNING, OUR ACFT WOULD HAVE PASSED AT THE SAME ALT WITH LITTLE OR NO SEPARATION. THE ACFT APPEARED TO BE A SINGLE ENG RETRACTABLE.
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.