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ZLC supervisor described a near loss of separation event when the instructor was late in taking the position from the trainee.
| Attributes | |
| ACN | 908022 |
| Time | |
| Date | 201009 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZLC.ARTCC |
| State Reference | UT |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Regional Jet 900 (CRJ900) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Supervisor / CIC |
| Events | |
| Anomaly | ATC Issue All Types |
Narrative:
The B737 departed boi climbing to FL280; southeast bound; a CRJ9 descending to 130; northwest bound; opposite direction. Developmental failed to recognize traffic confliction and spent time on lesser priorities. Instructor preempted developmental and issued a vector to the CRJ9 but then allowed developmental to continue issue control instructions. Situation was imminent and the instructor should have retained control of frequency until traffic was separated. The CRJ9 reported the B737 'traffic in sight'; and the instructor then preempted developmental and instructed the CRJ9 to maintain visual separation from the B737. The CRJ9 read back the clearance; then 2 seconds later oedp alerted. The instructor allowed situation to develop beyond the acceptable point for the developmental. The instructor's quick response to assign visual separation prevented the operational error; however this was a 'luck out' situation that was unacceptable.
Original NASA ASRS Text
Title: ZLC Supervisor described a near loss of separation event when the instructor was late in taking the position from the trainee.
Narrative: The B737 departed BOI climbing to FL280; southeast bound; a CRJ9 descending to 130; northwest bound; opposite direction. Developmental failed to recognize traffic confliction and spent time on lesser priorities. Instructor preempted Developmental and issued a vector to the CRJ9 but then allowed Developmental to continue issue control instructions. Situation was imminent and the Instructor should have retained control of frequency until traffic was separated. The CRJ9 reported the B737 'traffic in sight'; and the Instructor then preempted Developmental and instructed the CRJ9 to maintain visual separation from the B737. The CRJ9 read back the clearance; then 2 seconds later OEDP alerted. The Instructor allowed situation to develop beyond the acceptable point for the Developmental. The Instructor's quick response to assign visual separation prevented the Operational Error; however this was a 'luck out' situation that was unacceptable.
Data retrieved from NASA's ASRS site as of April 2012 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.