Narrative:

I was training a person in the radar position at bosox sector in area C in boston center. We had a full performance radar associate in our d-side. 30 mins prior to the incident, traffic was moderate which the radar trainee was handling satisfactorily. (8-15 aircraft). Air carrier X bos departure at 160 direct baf an overflt to lga. Cpr Y was a pvd departure (requesting FL390) which we climbed to 110 and turned 20 degree left for traffic at 120. Once we cleared the 120 traffic we climbed to 150. Traffic had built in the hfd vicinity which the radar trainee was satisfactorily handling. The radar associate then received a call from center sector on a point out on an air carrier orh departure climbing to 160 direct center. The radar associate approved the point out. I turned to the radar associate and said call them back and tell them unable due to traffic in vicinity and also to make sure center sector had a point out on cpr Y at 150, the get control reference air carrier X and other air carrier. The radar associate completed the call and said 'it's all set, center is watching cpr Y.' the radar trainee then turned cpr Y 30 degrees right to initiate climb once air carrier X at 160 was clear. Next update air carrier X data block showed 160 descending to 140. I told the radar associate to find out what center was doing reference cpr Y which we had turned 30 degree right. Center told the radar associate they were expediting the air carrier Y to 140. Once they were clear we climbed cpr Y to 230. Separation had been lost when center descended air carrier X to 140 with cpr Y in close proximity at 150. It was my understanding (and also the radar trainee's) that all coordination was completed by the radar associate and that center knew what we were doing with cpr Y reference air carrier Y could have been prevented with better communication and coordination between the sectors involved and between the radar associate and radar position.

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Original NASA ASRS Text

Title: ACR X HAD LTSS FROM CPR Y. SYS ERROR.

Narrative: I WAS TRAINING A PERSON IN THE RADAR POS AT BOSOX SECTOR IN AREA C IN BOSTON CENTER. WE HAD A FULL PERFORMANCE RADAR ASSOCIATE IN OUR D-SIDE. 30 MINS PRIOR TO THE INCIDENT, TFC WAS MODERATE WHICH THE RADAR TRAINEE WAS HANDLING SATISFACTORILY. (8-15 ACFT). ACR X BOS DEP AT 160 DIRECT BAF AN OVERFLT TO LGA. CPR Y WAS A PVD DEP (REQUESTING FL390) WHICH WE CLBED TO 110 AND TURNED 20 DEG L FOR TFC AT 120. ONCE WE CLRED THE 120 TFC WE CLBED TO 150. TFC HAD BUILT IN THE HFD VICINITY WHICH THE RADAR TRAINEE WAS SATISFACTORILY HANDLING. THE RADAR ASSOCIATE THEN RECEIVED A CALL FROM CTR SECTOR ON A POINT OUT ON AN ACR ORH DEP CLBING TO 160 DIRECT CTR. THE RADAR ASSOCIATE APPROVED THE POINT OUT. I TURNED TO THE RADAR ASSOCIATE AND SAID CALL THEM BACK AND TELL THEM UNABLE DUE TO TFC IN VICINITY AND ALSO TO MAKE SURE CTR SECTOR HAD A POINT OUT ON CPR Y AT 150, THE GET CTL REF ACR X AND OTHER ACR. THE RADAR ASSOCIATE COMPLETED THE CALL AND SAID 'IT'S ALL SET, CTR IS WATCHING CPR Y.' THE RADAR TRAINEE THEN TURNED CPR Y 30 DEGS R TO INITIATE CLB ONCE ACR X AT 160 WAS CLR. NEXT UPDATE ACR X DATA BLOCK SHOWED 160 DSNDING TO 140. I TOLD THE RADAR ASSOCIATE TO FIND OUT WHAT CTR WAS DOING REF CPR Y WHICH WE HAD TURNED 30 DEG R. CTR TOLD THE RADAR ASSOCIATE THEY WERE EXPEDITING THE ACR Y TO 140. ONCE THEY WERE CLR WE CLBED CPR Y TO 230. SEPARATION HAD BEEN LOST WHEN CTR DSNDED ACR X TO 140 WITH CPR Y IN CLOSE PROX AT 150. IT WAS MY UNDERSTANDING (AND ALSO THE RADAR TRAINEE'S) THAT ALL COORD WAS COMPLETED BY THE RADAR ASSOCIATE AND THAT CTR KNEW WHAT WE WERE DOING WITH CPR Y REF ACR Y COULD HAVE BEEN PREVENTED WITH BETTER COM AND COORD BTWN THE SECTORS INVOLVED AND BTWN THE RADAR ASSOCIATE AND RADAR POS.

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.