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ZMP controller assumes separation will exist between an en route C414 and a climbing B752.
| Attributes | |
| ACN | 529417 |
| Time | |
| Date | 200111 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | NE |
| Altitude | msl single value : 21000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp.artcc tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zmp.artcc |
| Operator | general aviation : personal |
| Make Model Name | Chancellor 414A & C414 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar pilot : instrument |
| Experience | controller non radar : 2 controller radar : 1.5 flight time total : 120 |
| ASRS Report | 529417 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X flight departed oma eastbound. The twin cessna was northbound at FL210. The air carrier X flight was assigned FL230 and looked like lateral separation would be maintained with the twin cessna. Separation was later lost.
Original NASA ASRS Text
Title: ZMP CTLR ASSUMES SEPARATION WILL EXIST BTWN AN ENRTE C414 AND A CLBING B752.
Narrative: ACR X FLT DEPARTED OMA EBOUND. THE TWIN CESSNA WAS NBOUND AT FL210. THE ACR X FLT WAS ASSIGNED FL230 AND LOOKED LIKE LATERAL SEPARATION WOULD BE MAINTAINED WITH THE TWIN CESSNA. SEPARATION WAS LATER LOST.
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.