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Close proximity less than standard separation between air carrier-medium large transport unk aircraft at FL190 southeast of sxc.
| Attributes | |
| ACN | 122030 |
| Time | |
| Date | 198909 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sxc |
| State Reference | CA |
| Altitude | msl bound lower : 18000 msl bound upper : 19000 |
| Environment | |
| Flight Conditions | VMC VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 160 flight time total : 22000 flight time type : 4500 |
| ASRS Report | 122030 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 12000 |
| ASRS Report | 122234 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Miss Distance | horizontal : 21000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
During climbout we were cleared to 17,000'. We switched to a new frequency and advised that we were leveling at 17,000'. She then cleared us to FL230. As we passed 18,500' she told us to level at FL190. We acknowledged level at FL190. She then told us to level at FL180. We pushed over to FL180 as she gave us a vector to the west for traffic. We acknowledged level at FL180 and asked the location of the traffic. After some hesitation she pointed out traffic passing to the right at 3 O'clock. The problem with all of this is that obviously there was an error, but the controller did not seem very concerned at all about it during or after the event conversation. Our estimate of the miss distance is based on our post-event sighting.
Original NASA ASRS Text
Title: CLOSE PROX LESS THAN STANDARD SEPARATION BETWEEN ACR-MLG UNK ACFT AT FL190 SE OF SXC.
Narrative: DURING CLIMBOUT WE WERE CLRED TO 17,000'. WE SWITCHED TO A NEW FREQ AND ADVISED THAT WE WERE LEVELING AT 17,000'. SHE THEN CLRED US TO FL230. AS WE PASSED 18,500' SHE TOLD US TO LEVEL AT FL190. WE ACKNOWLEDGED LEVEL AT FL190. SHE THEN TOLD US TO LEVEL AT FL180. WE PUSHED OVER TO FL180 AS SHE GAVE US A VECTOR TO THE W FOR TFC. WE ACKNOWLEDGED LEVEL AT FL180 AND ASKED THE LOCATION OF THE TFC. AFTER SOME HESITATION SHE POINTED OUT TFC PASSING TO THE RIGHT AT 3 O'CLOCK. THE PROBLEM WITH ALL OF THIS IS THAT OBVIOUSLY THERE WAS AN ERROR, BUT THE CTLR DID NOT SEEM VERY CONCERNED AT ALL ABOUT IT DURING OR AFTER THE EVENT CONVERSATION. OUR ESTIMATE OF THE MISS DISTANCE IS BASED ON OUR POST-EVENT SIGHTING.
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.