Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1.7
Situational Awareness; Distraction; Communication Breakdown; Training / Qualification
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Took Evasive Action
Human Factors; Airspace Structure; ATC Equipment / Nav Facility / Buildings; Procedure
Sector 75 had lost their frequency. They had several aircraft that were higher than normal due to the fact that they were not talking to them. Aircraft Y being worked by sector 75 was level at 33000 feet. This was a LGA lander. I was working Aircraft X on J60. He was level at 23000 feet. His path would have taken him directly underneath Aircraft Y who I thought was going to descend shortly. I had my Radar Assist controller point out that aircraft to Sector 75 and I turned Aircraft X to a 300 heading and climbed Aircraft X. This would have kept Aircraft X clear from Aircraft Y. Due to miscommunication; the Radar Controller at 75 did not know I was doing this. Once I noticed that we would lose separation I acted accordingly to re-establish separation as quickly as possible.
Sector 75 lost all frequencies for a period of time. Back-up frequencies were unavailable. Sector traffic that needed to be descended were high. Aircraft went to different frequencies then came back when we received new frequency. Aircraft Y was flying the MIP4 arrival to NY LGA. We regained communications with Aircraft Y and descended the aircraft. A point out was made to ZNY Sec 39 as the aircraft would be high going into the next fix. ZNY Sector 39 issued traffic to the Sector 75 Assist; Aircraft X climbing out of 22;000 for 36000 feet. Aircraft Y was issued an altitude and turned to the left to be descended and re-sequenced. HOWEVER; ZNY Sector 39 turned Aircraft X to a westbound heading into my airspace. THIS INFORMATION WAS NEVER COORDINATED WITH ME. Aircraft X continued westbound into Aircraft Y. The Assist Controller was told to have the Aircraft X stop at 26000 feet; and Aircraft Y was ordered to stop at 27000 feet. Aircraft X NEVER STOPPED ITS CLIMB AND CLIMBED INTO Aircraft Y. TCAS alerted Aircraft Y to climb. Separation was re-established.
ZNY Center controllers reported turning two aircraft; one climbing and one descending; into confliction due to incomplete coordination.