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ZOB controller described a conflict event when issuing a 'direct' clearance when a more positive method of separation should have been used.
| Attributes | |
| ACN | 1050511 |
| Time | |
| Date | 201211 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZOB.ARTCC |
| State Reference | OH |
| Aircraft 1 | |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy |
Narrative:
Air carrier X was at FL380 landing cmh. Air carrier Y was at FL360 landing phx; routed under air carrier X. I cleared air carrier Y direct vhp to keep him north of air carrier X and turned air carrier X 15 left (south) for his descent. After getting air carrier X clear of air carrier Y; I cleared air carrier X direct air which should have kept him south of air carrier Y and descended air carrier X to FL350. Air carrier X turned northwest instead of west and headed back into air carrier Y. I then turned air carrier X 10 left and air carrier Y 10 right but needed more and turned air carrier X an additional 15 left. [Should have] assigned air carrier X a heading until below air carrier Y instead of a direct route.
Original NASA ASRS Text
Title: ZOB Controller described a conflict event when issuing a 'direct' clearance when a more positive method of separation should have been used.
Narrative: Air Carrier X was at FL380 landing CMH. Air Carrier Y was at FL360 landing PHX; routed under Air Carrier X. I cleared Air Carrier Y direct VHP to keep him north of Air Carrier X and turned Air Carrier X 15 left (south) for his descent. After getting Air Carrier X clear of Air Carrier Y; I cleared Air Carrier X direct AIR which should have kept him south of Air Carrier Y and descended Air Carrier X to FL350. Air Carrier X turned northwest instead of west and headed back into Air Carrier Y. I then turned Air Carrier X 10 left and Air Carrier Y 10 right but needed more and turned Air Carrier X an additional 15 left. [Should have] assigned Air Carrier X a heading until below Air Carrier Y instead of a Direct route.
Data retrieved from NASA's ASRS site as of July 2013 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.