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ARTCC radar controller misjudged the route on a climbing DC9 and had less than standard separation with a B737 at FL310. Conflict alert was activated as the radar controller turned the B737. Associate controller was coordinated with other sectors at the time of the incident.
| Attributes | |
| ACN | 373089 |
| Time | |
| Date | 199707 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : gee |
| State Reference | NY |
| Altitude | msl bound lower : 29500 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : non radar |
| Qualification | controller : radar |
| Experience | controller radar : 2 |
| ASRS Report | 373089 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 8 |
| ASRS Report | 373090 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 22800 vertical : 1500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was the radar associate for 2 sectors taking care of coords that were necessary when I heard the radar controller turn air carrier X and ask air carrier Y if he was deviating. When I looked at the radar the conflict alert was flashing. Supplemental information from acn 373090: misjudgement of route on climbing aircraft.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR MISJUDGED THE RTE ON A CLBING DC9 AND HAD LTSS WITH A B737 AT FL310. CONFLICT ALERT WAS ACTIVATED AS THE RADAR CTLR TURNED THE B737. ASSOCIATE CTLR WAS COORDINATED WITH OTHER SECTORS AT THE TIME OF THE INCIDENT.
Narrative: I WAS THE RADAR ASSOCIATE FOR 2 SECTORS TAKING CARE OF COORDS THAT WERE NECESSARY WHEN I HEARD THE RADAR CTLR TURN ACR X AND ASK ACR Y IF HE WAS DEVIATING. WHEN I LOOKED AT THE RADAR THE CONFLICT ALERT WAS FLASHING. SUPPLEMENTAL INFO FROM ACN 373090: MISJUDGEMENT OF RTE ON CLBING ACFT.
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.