Narrative:

I was training my trainee on the J212 position; which is a feeder to final and we worked the traffic into and out of frg; the satellite airport. We had just completed giving an A319 a right 360 degree turn as a delay vector to final. The final position was running out of airspace; which is why I told my trainee to 'spin' the A319. As we were discussing this maneuver and prior to acting on it; I noticed that the isp sector had taken radar on 2 jfk arrivals that came from the south. I was a bit perplexed; because we normally don't receive arrivals from them. When we do; we usually have 2 arrival runways to use; runway 22L+right. At this time; however; we only had runway 22L to use and as I stated; final was already getting saturated with traffic from the south and quickly running out of airspace. These 2 arrivals were never coordinated with me and I did not know how or where they planned on feeding me these aircraft. I had to coordinate with the isp controller and advise that he/she may have to delay those 2 arrivals. When I had to delay my own arrival; I called the isp position and advised them that he/she had to spin those 2 aircraft. After the A319 spun once; we started to vector him towards final. We noticed a VFR aircraft about 5-10 miles in front of him at 5;100 ft moving briskly westbound. My trainee called the traffic and turned the A319 northwest bound; I overrode his decision and turned the A319 south/southwest bound. I did so because that aircraft was navigating quickly westbound and I thought it would be safer to vector my aircraft behind the unknown target. I think I then called isp to tell them that I would take their aircraft and then; before we had time to react; the VFR aircraft made an immediate reversal of course and immediately converged with the A319 at 5;100 ft. The A319; who was level at 5;000 ft; responded to a TCAS RA and descended to 4;300 ft. I attempted to descend him; but the pilot was already responding to the RA. After they converged and separated; I asked the A319 if he saw what type aircraft it was. The pilot responded no; it was dark and he only saw lights; however the aircraft was less than a mile away and maybe 300 ft. He subsequently stated that it was some sort of corporate jet. Had I not been distracted by the 2 surprise arrivals from isp; I may have noticed the VFR aircraft sooner. I recommend that whoever approves re-routes should coordinate with the receiving controller as to when; where; and how this will be done.

Related reports:

Google
 

Original NASA ASRS Text

Title: N90 Controller described a conflict event when an unknown aircraft became traffic for an Air Carrier completing a turn for spacing. The reporter claimed uncoordinated re-routes as a causal factor.

Narrative: I was training my trainee on the J212 position; which is a feeder to Final and we worked the traffic into and out of FRG; the satellite airport. We had just completed giving an A319 a right 360 degree turn as a delay vector to Final. The Final position was running out of airspace; which is why I told my trainee to 'spin' the A319. As we were discussing this maneuver and prior to acting on it; I noticed that the ISP Sector had taken RADAR on 2 JFK arrivals that came from the south. I was a bit perplexed; because we normally don't receive arrivals from them. When we do; we usually have 2 arrival runways to use; Runway 22L+R. At this time; however; we only had Runway 22L to use and as I stated; Final was already getting saturated with traffic from the south and quickly running out of airspace. These 2 arrivals were never coordinated with me and I did not know how or where they planned on feeding me these aircraft. I had to coordinate with the ISP Controller and advise that he/she may have to delay those 2 arrivals. When I had to delay my own arrival; I called the ISP position and advised them that he/she had to spin those 2 aircraft. After the A319 spun once; we started to vector him towards Final. We noticed a VFR aircraft about 5-10 miles in front of him at 5;100 FT moving briskly westbound. My trainee called the traffic and turned the A319 northwest bound; I overrode his decision and turned the A319 south/southwest bound. I did so because that aircraft was navigating quickly westbound and I thought it would be safer to vector my aircraft behind the unknown target. I think I then called ISP to tell them that I would take their aircraft and then; before we had time to react; the VFR aircraft made an immediate reversal of course and immediately converged with the A319 at 5;100 FT. The A319; who was level at 5;000 FT; responded to a TCAS RA and descended to 4;300 FT. I attempted to descend him; but the pilot was already responding to the RA. After they converged and separated; I asked the A319 if he saw what type aircraft it was. The pilot responded no; it was dark and he only saw lights; however the aircraft was less than a mile away and maybe 300 FT. He subsequently stated that it was some sort of corporate jet. Had I not been distracted by the 2 surprise arrivals from ISP; I may have noticed the VFR aircraft sooner. I recommend that whoever approves re-routes should coordinate with the receiving Controller as to when; where; and how this will be done.

Data retrieved from NASA's ASRS site as of April 2012 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.