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Air carrier X climb through occupied altitude had less than standard separation from air carrier Y. System error.
| Attributes | |
| ACN | 213645 |
| Time | |
| Date | 199206 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : hkg |
| State Reference | FO |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : vhhk |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 17000 flight time type : 90 |
| ASRS Report | 213645 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier Y freighter crossed air carrier X bow with a separation of 2 mi at our altitude as we climbed through FL290 to FL330. Air carrier X was on assigned heading 090 degrees. Air carrier Y appeared to be level at FL290 on a heading of 060. ATC controller was advised of the near miss. I had just asked controller for 'direct elato' which was declined and I looked out to see other air carrier Y at 2 O'clock. I called out the traffic and we watched it cross from right to left. I then reported the incident to hkg controller.
Original NASA ASRS Text
Title: ACR X CLB THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.
Narrative: ACR Y FREIGHTER CROSSED ACR X BOW WITH A SEPARATION OF 2 MI AT OUR ALT AS WE CLBED THROUGH FL290 TO FL330. ACR X WAS ON ASSIGNED HDG 090 DEGS. ACR Y APPEARED TO BE LEVEL AT FL290 ON A HDG OF 060. ATC CTLR WAS ADVISED OF THE NEAR MISS. I HAD JUST ASKED CTLR FOR 'DIRECT ELATO' WHICH WAS DECLINED AND I LOOKED OUT TO SEE OTHER ACR Y AT 2 O'CLOCK. I CALLED OUT THE TFC AND WE WATCHED IT CROSS FROM R TO L. I THEN RPTED THE INCIDENT TO HKG CTLR.
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.