Narrative:

While working jfk departure control on aircraft under my control was involved in a near midair collision. Jfk was landing and departing runway 31L. At XA00 local I assumed responsibility for jfk departure. Air carrier X made initial contact with me at that time leaving 500' for 5000'. This aircraft was an large transport, departing runway 31L, swbnd on a bridge NDB climb. Air carrier X was flight planned over wavey, southeast of jfk. I radar identified air carrier X and instructed him to maintain 5000'. The air carrier X was told to stop at 5000' because of an aircraft with a radio failure southwest of jfk by 4 NM, swbnd at 6000' (an small aircraft landing 2n8). At XA01 local I observed small aircraft turning wsw bound descending. I instructed air carrier X to turn right heading 260 degree to parallel the small aircraft. At that time I also instructed jfk tower to stop departures because I did not know what the small aircraft was doing. At XA02 local I instructed air carrier X to turn right 290 degree because he was still converging with the small aircraft. At this time I observed an lga arrival, air carrier Y, an large transport eastbound descending out of 6000'. I immediately yelled over to lga empyr position to inquire if air carrier Y was turning left to remain clear of jfk departure airspace. At XA03 air carrier Y entered jfk departure airspace still eastbound, descending directly into air carrier X. I yelled to the empyr controller to stop air carrier Y descent (now out of 5400') instructed air carrier X to turn left 220 degree and stop climb (now out of 4700'). I could not turn air carrier X further left because of NORDO aircraft was still swbnd descending out of 5000'. Air carrier X acknowledged the instructions and told me he saw air carrier Y. I instructed him to maintain visual separation and turn left 220 degree when able. I observed air carrier X and air carrier Y beacon targets merge, both indicating 5000'. I cannot estimate how close the aircraft came to each other. Air carrier Y immediately reported a near midair collision to empyr controller. I immediately informed supervisor of the systems deviation and operational error. Contributing factor: empyr controller newly qualified failed to make a pointout. Small aircraft improper RF procedures. Supplemental information from acn 113149: I was working the lga empyr position (without a handoff person). My workload was becoming heavy. I had air carrier Y on a 100 degree heading descending to 4000'. I was coordinating a runway 4 ILS for an aircraft with my supervisor and lga tower. The active runway was localizer 31. I was slowing aircraft with ny center and washington center. I was told by a jfk controller to turn air carrier Y nwbnd to avoid their traffic. Air carrier Y was close to the lga/jfk boundary. They also made mention of a NORDO, air carrier X. I assumed air carrier X was NORDO off jfk runway 31, climbing to 5000'. I told air carrier Y to turn left heading 320 degree continue to 4000' vector around NORDO traffic. Then someone said stop air carrier Y descent. I told air carrier Y to stop his descent immediately. Traffic indicated 4800'. Air carrier Y was at 5000'. Air carrier X was told to maintain 4000'. Air carrier X had air carrier Y in sight. Air carrier X was told to maintain visual separation and continued his climb. I was very busy at the time with the 'odd ball' aircraft and an 'odd ball' heavy jet from jfk direct lga.

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Original NASA ASRS Text

Title: APCH CTLR DESCENDED ACR Y, IN DEP CTLR AIRSPACE, WITHOUT COORD THROUGH ACR X, RESULTING IN LESS THAN STANDARD SEPARATION. SYSTEM ERROR. NMAC.

Narrative: WHILE WORKING JFK DEP CTL ON ACFT UNDER MY CTL WAS INVOLVED IN A NEAR MIDAIR COLLISION. JFK WAS LNDG AND DEPARTING RWY 31L. AT XA00 LCL I ASSUMED RESPONSIBILITY FOR JFK DEP. ACR X MADE INITIAL CONTACT WITH ME AT THAT TIME LEAVING 500' FOR 5000'. THIS ACFT WAS AN LGT, DEPARTING RWY 31L, SWBND ON A BRIDGE NDB CLIMB. ACR X WAS FLT PLANNED OVER WAVEY, SE OF JFK. I RADAR IDENTIFIED ACR X AND INSTRUCTED HIM TO MAINTAIN 5000'. THE ACR X WAS TOLD TO STOP AT 5000' BECAUSE OF AN ACFT WITH A RADIO FAILURE SW OF JFK BY 4 NM, SWBND AT 6000' (AN SMA LNDG 2N8). AT XA01 LCL I OBSERVED SMA TURNING WSW BOUND DSNDING. I INSTRUCTED ACR X TO TURN RIGHT HDG 260 DEG TO PARALLEL THE SMA. AT THAT TIME I ALSO INSTRUCTED JFK TWR TO STOP DEPS BECAUSE I DID NOT KNOW WHAT THE SMA WAS DOING. AT XA02 LCL I INSTRUCTED ACR X TO TURN RIGHT 290 DEG BECAUSE HE WAS STILL CONVERGING WITH THE SMA. AT THIS TIME I OBSERVED AN LGA ARR, ACR Y, AN LGT EBND DSNDING OUT OF 6000'. I IMMEDIATELY YELLED OVER TO LGA EMPYR POSITION TO INQUIRE IF ACR Y WAS TURNING LEFT TO REMAIN CLEAR OF JFK DEP AIRSPACE. AT XA03 ACR Y ENTERED JFK DEP AIRSPACE STILL EBND, DSNDING DIRECTLY INTO ACR X. I YELLED TO THE EMPYR CTLR TO STOP ACR Y DSCNT (NOW OUT OF 5400') INSTRUCTED ACR X TO TURN LEFT 220 DEG AND STOP CLIMB (NOW OUT OF 4700'). I COULD NOT TURN ACR X FURTHER LEFT BECAUSE OF NORDO ACFT WAS STILL SWBND DSNDING OUT OF 5000'. ACR X ACKNOWLEDGED THE INSTRUCTIONS AND TOLD ME HE SAW ACR Y. I INSTRUCTED HIM TO MAINTAIN VISUAL SEPARATION AND TURN LEFT 220 DEG WHEN ABLE. I OBSERVED ACR X AND ACR Y BEACON TARGETS MERGE, BOTH INDICATING 5000'. I CANNOT ESTIMATE HOW CLOSE THE ACFT CAME TO EACH OTHER. ACR Y IMMEDIATELY REPORTED A NEAR MIDAIR COLLISION TO EMPYR CTLR. I IMMEDIATELY INFORMED SUPVR OF THE SYSTEMS DEVIATION AND OPERATIONAL ERROR. CONTRIBUTING FACTOR: EMPYR CTLR NEWLY QUALIFIED FAILED TO MAKE A POINTOUT. SMA IMPROPER RF PROCEDURES. SUPPLEMENTAL INFORMATION FROM ACN 113149: I WAS WORKING THE LGA EMPYR POSITION (WITHOUT A HANDOFF PERSON). MY WORKLOAD WAS BECOMING HEAVY. I HAD ACR Y ON A 100 DEG HDG DSNDING TO 4000'. I WAS COORDINATING A RWY 4 ILS FOR AN ACFT WITH MY SUPVR AND LGA TWR. THE ACTIVE RWY WAS LOC 31. I WAS SLOWING ACFT WITH NY CENTER AND WASHINGTON CENTER. I WAS TOLD BY A JFK CTLR TO TURN ACR Y NWBND TO AVOID THEIR TFC. ACR Y WAS CLOSE TO THE LGA/JFK BOUNDARY. THEY ALSO MADE MENTION OF A NORDO, ACR X. I ASSUMED ACR X WAS NORDO OFF JFK RWY 31, CLIMBING TO 5000'. I TOLD ACR Y TO TURN LEFT HDG 320 DEG CONTINUE TO 4000' VECTOR AROUND NORDO TFC. THEN SOMEONE SAID STOP ACR Y DSCNT. I TOLD ACR Y TO STOP HIS DSCNT IMMEDIATELY. TFC INDICATED 4800'. ACR Y WAS AT 5000'. ACR X WAS TOLD TO MAINTAIN 4000'. ACR X HAD ACR Y IN SIGHT. ACR X WAS TOLD TO MAINTAIN VISUAL SEPARATION AND CONTINUED HIS CLIMB. I WAS VERY BUSY AT THE TIME WITH THE 'ODD BALL' ACFT AND AN 'ODD BALL' HEAVY JET FROM JFK DIRECT LGA.

Data retrieved from NASA's ASRS site as of August 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.