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ZOB controller initiates change to previous controller's sequencing but does not ensure separation between descending and climbing traffic sequenced into dtw.
| Attributes | |
| ACN | 453290 |
| Time | |
| Date | 199910 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : djb.vortac |
| State Reference | OH |
| Altitude | msl single value : 19000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | BAe 125 Series 1000 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude descent : approach |
| Route In Use | arrival : on vectors arrival star : cetus 2 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 7.5 |
| ASRS Report | 453290 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance Airspace Structure |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I had just relieved a controller who had aircraft doing things differently than I wanted. Within a few moments, I attempted to set the sector to my preference. Air carrier X went north towards toronto but was headed east over djb VORTAC. I turned air carrier X left 020 degree heading, overlooking his request altitude 17000 ft. I also climbed him to FL230. Air carrier Y was inbound dtw via cetus 2 arrival descending to 17000 ft. Initially, I had wanted to turn air carrier Y right for air carrier X. However, in making other control decisions this was overlooked. When I realized this, air carrier Y was turned right to 360 degree heading and descended. Air carrier X was turned further left to 340 degree heading and kept climbing.
Original NASA ASRS Text
Title: ZOB CTLR INITIATES CHANGE TO PREVIOUS CTLR'S SEQUENCING BUT DOES NOT ENSURE SEPARATION BTWN DSNDING AND CLBING TFC SEQUENCED INTO DTW.
Narrative: I HAD JUST RELIEVED A CTLR WHO HAD ACFT DOING THINGS DIFFERENTLY THAN I WANTED. WITHIN A FEW MOMENTS, I ATTEMPTED TO SET THE SECTOR TO MY PREFERENCE. ACR X WENT N TOWARDS TORONTO BUT WAS HEADED E OVER DJB VORTAC. I TURNED ACR X L 020 DEG HDG, OVERLOOKING HIS REQUEST ALT 17000 FT. I ALSO CLBED HIM TO FL230. ACR Y WAS INBOUND DTW VIA CETUS 2 ARR DSNDING TO 17000 FT. INITIALLY, I HAD WANTED TO TURN ACR Y R FOR ACR X. HOWEVER, IN MAKING OTHER CTL DECISIONS THIS WAS OVERLOOKED. WHEN I REALIZED THIS, ACR Y WAS TURNED R TO 360 DEG HDG AND DSNDED. ACR X WAS TURNED FURTHER L TO 340 DEG HDG AND KEPT CLBING.
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.