Narrative:

Working radar in the positive control area over sie isle (sie)/atlantic city (acy) the sector controls from FL180 and above in the southern half of sector and FL240 and above in the northern half. Radar sector 59 is predominantly a transition area for northbound arrs into ny metropolitan area and sbound departures from this same area. During the morning departure flow of traffic, I was involved with establishing the initial sequence for arrs into raleigh durham (rdu) airport while transitioning the ny metropolitan departures into high altitude stratum. I accepted a radar handoff on mlt X tracking down J174 from hampton VORTAC (hto) toward snow hill VORTAC (swl). I initiated coordination with ZNY to have a departure that I was accepting a handoff on turn right to a heading of 250 degrees radar vectors for his climb. Having observed mlt X tracking sbound for approximately 10 mi on a steady heading I pointed out the jfk departure to ZBW for control to climb air carrier Y reference mlt X. At the time and point I thought I had the min separation need to climb the departure air carrier Y from FL230 to his requested higher altitude. I issued climb clearance and within a min, min separation (5 mi or 1000 ft) was lost. Closest proximity 2.6 mi diverging. Things that happened during incident: 1) when separation was lost I attempted to cancel the climb clearance but no response was received from air carrier Y. 2) by the time air carrier Y did acknowledge transmissions he was leaving FL245, climbing, so there was no reason to stop his climb. 3) during the time climb was issued to air carrier Y, the mlt X aircraft had drifted 6 mi west of course of J174.

Related reports:

Google
 

Original NASA ASRS Text

Title: ACR Y CLB THROUGH OCCUPIED ALT HAD LTSS FROM MLT X. SYS ERROR.

Narrative: WORKING RADAR IN THE PCA OVER SIE ISLE (SIE)/ATLANTIC CITY (ACY) THE SECTOR CTLS FROM FL180 AND ABOVE IN THE SOUTHERN HALF OF SECTOR AND FL240 AND ABOVE IN THE NORTHERN HALF. RADAR SECTOR 59 IS PREDOMINANTLY A TRANSITION AREA FOR NBOUND ARRS INTO NY METRO AREA AND SBOUND DEPS FROM THIS SAME AREA. DURING THE MORNING DEP FLOW OF TFC, I WAS INVOLVED WITH ESTABLISHING THE INITIAL SEQUENCE FOR ARRS INTO RALEIGH DURHAM (RDU) ARPT WHILE TRANSITIONING THE NY METRO DEPS INTO HIGH ALT STRATUM. I ACCEPTED A RADAR HDOF ON MLT X TRACKING DOWN J174 FROM HAMPTON VORTAC (HTO) TOWARD SNOW HILL VORTAC (SWL). I INITIATED COORD WITH ZNY TO HAVE A DEP THAT I WAS ACCEPTING A HDOF ON TURN R TO A HDG OF 250 DEGS RADAR VECTORS FOR HIS CLB. HAVING OBSERVED MLT X TRACKING SBOUND FOR APPROX 10 MI ON A STEADY HDG I POINTED OUT THE JFK DEP TO ZBW FOR CTL TO CLB ACR Y REF MLT X. AT THE TIME AND POINT I THOUGHT I HAD THE MIN SEPARATION NEED TO CLB THE DEP ACR Y FROM FL230 TO HIS REQUESTED HIGHER ALT. I ISSUED CLB CLRNC AND WITHIN A MIN, MIN SEPARATION (5 MI OR 1000 FT) WAS LOST. CLOSEST PROX 2.6 MI DIVERGING. THINGS THAT HAPPENED DURING INCIDENT: 1) WHEN SEPARATION WAS LOST I ATTEMPTED TO CANCEL THE CLB CLRNC BUT NO RESPONSE WAS RECEIVED FROM ACR Y. 2) BY THE TIME ACR Y DID ACKNOWLEDGE TRANSMISSIONS HE WAS LEAVING FL245, CLBING, SO THERE WAS NO REASON TO STOP HIS CLB. 3) DURING THE TIME CLB WAS ISSUED TO ACR Y, THE MLT X ACFT HAD DRIFTED 6 MI W OF COURSE OF J174.

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.