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ZKC controller incurs an operational error when neither air carrier can turn sufficiently to ensure lateral separation due to WX, and changing altitude is not timely.
| Attributes | |
| ACN | 522712 |
| Time | |
| Date | 200108 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : sln.vortac |
| State Reference | KS |
| Altitude | msl single value : 35000 |
| Environment | |
| Weather Elements | Thunderstorm |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 11 controller radar : 9 |
| ASRS Report | 522712 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : published procedure non adherence : required legal separation other spatial deviation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment flight crew : took precautionary avoidance action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 22200 vertical : 1300 |
| Supplementary | |
| Problem Areas | Weather Airspace Structure ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I had a confliction between air carrier X (FL350) and air carrier Y (FL350). The air carrier X would not turn because of WX, so I turned the air carrier Y as much as I could. I was unsure of separation, so I climbed the air carrier X 1000 ft and I descended the air carrier Y 1000 ft. I had traffic under the air carrier Y at FL330, air carrier Z, but I knew they were passed each other already.
Original NASA ASRS Text
Title: ZKC CTLR INCURS AN OPERROR WHEN NEITHER ACR CAN TURN SUFFICIENTLY TO ENSURE LATERAL SEPARATION DUE TO WX, AND CHANGING ALT IS NOT TIMELY.
Narrative: I HAD A CONFLICTION BTWN ACR X (FL350) AND ACR Y (FL350). THE ACR X WOULD NOT TURN BECAUSE OF WX, SO I TURNED THE ACR Y AS MUCH AS I COULD. I WAS UNSURE OF SEPARATION, SO I CLBED THE ACR X 1000 FT AND I DSNDED THE ACR Y 1000 FT. I HAD TFC UNDER THE ACR Y AT FL330, ACR Z, BUT I KNEW THEY WERE PASSED EACH OTHER ALREADY.
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.