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ZBW controller experienced operational error at FL410 after failing to realize the necessary altitude separation was not being achieved.
| Attributes | |
| ACN | 678070 |
| Time | |
| Date | 200511 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : hto.vortac |
| State Reference | NY |
| Altitude | msl bound lower : 41000 msl bound upper : 42400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 31 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 14 |
| ASRS Report | 678070 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 1400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I did not provide enough lateral separation to these aircraft until the desired (required) 2000 ft vertical separation was achieved. I also considered 1000 ft vertical separation as acceptable; until it was too late and I realized that I needed 2000 ft.
Original NASA ASRS Text
Title: ZBW CTLR EXPERIENCED OPERROR AT FL410 AFTER FAILING TO REALIZE THE NECESSARY ALT SEPARATION WAS NOT BEING ACHIEVED.
Narrative: I DID NOT PROVIDE ENOUGH LATERAL SEPARATION TO THESE ACFT UNTIL THE DESIRED (REQUIRED) 2000 FT VERT SEPARATION WAS ACHIEVED. I ALSO CONSIDERED 1000 FT VERT SEPARATION AS ACCEPTABLE; UNTIL IT WAS TOO LATE AND I REALIZED THAT I NEEDED 2000 FT.
Data retrieved from NASA's ASRS site as of January 2009 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.