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ZOB controller is distraction with sector traffic volume and does not observe conflict until too late to ensure positive controller separation.
| Attributes | |
| ACN | 449183 |
| Time | |
| Date | 199909 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : djb.vortac |
| State Reference | OH |
| Altitude | msl single value : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Make Model Name | Do 328 TP (Turboprop) |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | general aviation : personal |
| Make Model Name | Challenger CL600 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : enroute altitude change cruise : descent |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 8 controller radar : 14 |
| ASRS Report | 449183 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert other other : radar equipment |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21000 vertical : 100 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | Airspace Structure |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X was level at FL220 direct aco and aircraft Y was on a heading and descent for sequencing into cle approach airspace. Separation was lost between the 2 aircraft. Traffic was very complex and busy at the time of the incident.
Original NASA ASRS Text
Title: ZOB CTLR IS DISTR WITH SECTOR TFC VOLUME AND DOES NOT OBSERVE CONFLICT UNTIL TOO LATE TO ENSURE POSITIVE CTLR SEPARATION.
Narrative: ACFT X WAS LEVEL AT FL220 DIRECT ACO AND ACFT Y WAS ON A HDG AND DSCNT FOR SEQUENCING INTO CLE APCH AIRSPACE. SEPARATION WAS LOST BTWN THE 2 ACFT. TFC WAS VERY COMPLEX AND BUSY AT THE TIME OF THE INCIDENT.
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.