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ARTCC radar controller descended an air carrier aircraft through the altitude of a citation aircraft he had taken a handoff on 15 mins earlier and then forgot. When the conflict alert activated the controller turned the citation, but separation was lost anyway.
| Attributes | |
| ACN | 352700 |
| Time | |
| Date | 199611 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sie |
| State Reference | NJ |
| Altitude | msl bound lower : 39000 msl bound upper : 40000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 1 |
| ASRS Report | 352700 |
| 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 other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 1000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
A citation at FL390 doing 160 KTS across the ground was pointed out to me by the adjacent sector (cyn) going direct sby while the aircraft was at the northern most portion of my sector. At the time I had almost no airplanes. Approximately 15 mins later I accepted handoffs on 4 airplanes from the south. 2 jfk arrs, 1 hpn arrival and 1 isp arrival. I put a j-hoop on the hpn arrival at FL410 for the purposes of separation from the other 3 nbounds. I was clear of the nbounds so I gave the descent restr to cross beckr at FL240. A few moments later the conflict alert went off. I turned the citation 30 degrees right but it was too late.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR DSNDED AN ACR ACFT THROUGH THE ALT OF A CITATION ACFT HE HAD TAKEN A HDOF ON 15 MINS EARLIER AND THEN FORGOT. WHEN THE CONFLICT ALERT ACTIVATED THE CTLR TURNED THE CITATION, BUT SEPARATION WAS LOST ANYWAY.
Narrative: A CITATION AT FL390 DOING 160 KTS ACROSS THE GND WAS POINTED OUT TO ME BY THE ADJACENT SECTOR (CYN) GOING DIRECT SBY WHILE THE ACFT WAS AT THE NORTHERN MOST PORTION OF MY SECTOR. AT THE TIME I HAD ALMOST NO AIRPLANES. APPROX 15 MINS LATER I ACCEPTED HDOFS ON 4 AIRPLANES FROM THE S. 2 JFK ARRS, 1 HPN ARR AND 1 ISP ARR. I PUT A J-HOOP ON THE HPN ARR AT FL410 FOR THE PURPOSES OF SEPARATION FROM THE OTHER 3 NBOUNDS. I WAS CLR OF THE NBOUNDS SO I GAVE THE DSCNT RESTR TO CROSS BECKR AT FL240. A FEW MOMENTS LATER THE CONFLICT ALERT WENT OFF. I TURNED THE CITATION 30 DEGS R BUT IT WAS TOO LATE.
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.