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Air carrier X same altitude assigned had less than standard separation from air carrier Y. System error. Evasive action taken.
| Attributes | |
| ACN | 290240 |
| Time | |
| Date | 199412 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sli |
| State Reference | CA |
| Altitude | msl bound lower : 7000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 31 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Xingu EMB-121 All Series |
| Operating Under FAR Part | Part 135 |
| 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 : atp |
| Experience | flight time last 90 days : 300 flight time total : 8200 flight time type : 1200 |
| ASRS Report | 290240 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 0 |
Narrative:
15 mi sse sli VOR. Receiving vectors to sli VOR for approach to lax international. Socal vectored us (air carrier X BA3100) to heading 210 at 7000 ft after departing sna. Air carrier Y emb-120, also at 7000 ft was also vectored to sli VOR for approach to lax international. Our heading was 210 degrees his was roughly 060-090 degrees. He crossed left to right about 1/2 mi ahead. We descended immediately to avoid the traffic. We notified ATC of altitude deviation. Traffic was heavy and workload of ATC was high. WX was on top VFR, visibility very good.
Original NASA ASRS Text
Title: ACR X SAME ALT ASSIGNED HAD LTSS FROM ACR Y. SYS ERROR. EVASIVE ACTION TAKEN.
Narrative: 15 MI SSE SLI VOR. RECEIVING VECTORS TO SLI VOR FOR APCH TO LAX INTL. SOCAL VECTORED US (ACR X BA3100) TO HDG 210 AT 7000 FT AFTER DEPARTING SNA. ACR Y EMB-120, ALSO AT 7000 FT WAS ALSO VECTORED TO SLI VOR FOR APCH TO LAX INTL. OUR HDG WAS 210 DEGS HIS WAS ROUGHLY 060-090 DEGS. HE CROSSED L TO R ABOUT 1/2 MI AHEAD. WE DSNDED IMMEDIATELY TO AVOID THE TFC. WE NOTIFIED ATC OF ALTDEV. TFC WAS HVY AND WORKLOAD OF ATC WAS HIGH. WX WAS ON TOP VFR, VISIBILITY VERY GOOD.
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.