Narrative:

Handed off air carrier X to bos sector 10 at FL370. Did not transfer communications so as to be able to issue traffic on air carrier Y at FL350. I asked air carrier Y if he could accept FL370 or above, that way air carrier Y could have direct routing (nrp) clear of air carrier X. Air carrier Y said he could take FL370. I in turn called ZOB to approve wafdof. FL370 was approved by ZOB. I then climbed air carrier Y to FL370, scanned the strips, looked back at the scope, saw air carrier X at FL370, saw air carrier Y FL370 climbing to FL350 I then asked air carrier Y if he had left FL350. He said affirmative FL353 for FL370. I contemplated descending air carrier Y back to FL350, reevaluated and thought an immediate climb to FL370 and an immediate 40 degree right turn for air carrier Y and an immediately descent to FL330 and an immediate 40 degree right turn for air carrier X would resolve the confliction. Air carrier X missed the first transmission. Supplemental information from acn 240370: a wbound air carrier Y at FL350 was en route to sjc and over uca VORTAC when the controller decided to try and give a more direct routing and a higher altitude while trying to help out the aircraft and accomplish necessary coordination. Air carrier X from overseas was en route to jfk at FL370, sebound. Air carrier X had been handed off to the next sector, but kept on frequency to issue TA in anticipation of the air carrier Y climb. With the radar associate accomplishing other tasks and the radar controller coordinating for the short cut and climb to a wrong altitude for direction of flight altitude (due to aircraft limitations), the radar controller finished coordinating and climbed air carrier Y to FL370. When the aircraft were converging at a distance of about 10 mi, the radar controller observed the confliction, the conflict alert then activated and the controller asked for an altitude report. Air carrier Y reported out of FL353. The radar controller decided to keep him climbing and issued diverging radar vectors and an immediate continuation of climb for air carrier Y and descent to air carrier X. I just think air carrier Y should have been given descent back to FL350, but I am not a radar controller.

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Original NASA ASRS Text

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

Narrative: HANDED OFF ACR X TO BOS SECTOR 10 AT FL370. DID NOT TRANSFER COMS SO AS TO BE ABLE TO ISSUE TFC ON ACR Y AT FL350. I ASKED ACR Y IF HE COULD ACCEPT FL370 OR ABOVE, THAT WAY ACR Y COULD HAVE DIRECT ROUTING (NRP) CLR OF ACR X. ACR Y SAID HE COULD TAKE FL370. I IN TURN CALLED ZOB TO APPROVE WAFDOF. FL370 WAS APPROVED BY ZOB. I THEN CLBED ACR Y TO FL370, SCANNED THE STRIPS, LOOKED BACK AT THE SCOPE, SAW ACR X AT FL370, SAW ACR Y FL370 CLBING TO FL350 I THEN ASKED ACR Y IF HE HAD LEFT FL350. HE SAID AFFIRMATIVE FL353 FOR FL370. I CONTEMPLATED DSNDING ACR Y BACK TO FL350, REEVALUATED AND THOUGHT AN IMMEDIATE CLB TO FL370 AND AN IMMEDIATE 40 DEG R TURN FOR ACR Y AND AN IMMEDIATELY DSCNT TO FL330 AND AN IMMEDIATE 40 DEG R TURN FOR ACR X WOULD RESOLVE THE CONFLICTION. ACR X MISSED THE FIRST XMISSION. SUPPLEMENTAL INFO FROM ACN 240370: A WBOUND ACR Y AT FL350 WAS ENRTE TO SJC AND OVER UCA VORTAC WHEN THE CTLR DECIDED TO TRY AND GIVE A MORE DIRECT ROUTING AND A HIGHER ALT WHILE TRYING TO HELP OUT THE ACFT AND ACCOMPLISH NECESSARY COORD. ACR X FROM OVERSEAS WAS ENRTE TO JFK AT FL370, SEBOUND. ACR X HAD BEEN HANDED OFF TO THE NEXT SECTOR, BUT KEPT ON FREQ TO ISSUE TA IN ANTICIPATION OF THE ACR Y CLB. WITH THE RADAR ASSOCIATE ACCOMPLISHING OTHER TASKS AND THE RADAR CTLR COORDINATING FOR THE SHORT CUT AND CLB TO A WRONG ALT FOR DIRECTION OF FLT ALT (DUE TO ACFT LIMITATIONS), THE RADAR CTLR FINISHED COORDINATING AND CLBED ACR Y TO FL370. WHEN THE ACFT WERE CONVERGING AT A DISTANCE OF ABOUT 10 MI, THE RADAR CTLR OBSERVED THE CONFLICTION, THE CONFLICT ALERT THEN ACTIVATED AND THE CTLR ASKED FOR AN ALT RPT. ACR Y RPTED OUT OF FL353. THE RADAR CTLR DECIDED TO KEEP HIM CLBING AND ISSUED DIVERGING RADAR VECTORS AND AN IMMEDIATE CONTINUATION OF CLB FOR ACR Y AND DSCNT TO ACR X. I JUST THINK ACR Y SHOULD HAVE BEEN GIVEN DSCNT BACK TO FL350, BUT I AM NOT A RADAR CTLR.

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.