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ZOB handoff controller did not hear radar controller clrncs which resulted in loss of separation at FL270.
| Attributes | |
| ACN | 602793 |
| Time | |
| Date | 200312 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : jhw.vor |
| State Reference | NY |
| Altitude | msl single value : 27000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A321 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar |
| Experience | controller military : 10 controller radar : 6 |
| ASRS Report | 602793 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24900 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working dkk-D, doing d-side duties and did not hear radar controller descend the A321 through FL270. I didn't notice until radar controller was taking evasive action.
Original NASA ASRS Text
Title: ZOB HDOF CTLR DID NOT HEAR RADAR CTLR CLRNCS WHICH RESULTED IN LOSS OF SEPARATION AT FL270.
Narrative: I WAS WORKING DKK-D, DOING D-SIDE DUTIES AND DID NOT HEAR RADAR CTLR DSND THE A321 THROUGH FL270. I DIDN'T NOTICE UNTIL RADAR CTLR WAS TAKING EVASIVE ACTION.
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.