Any Unknown or Unlisted Aircraft Manufacturer
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 3
Distraction; Situational Awareness; Confusion; Communication Breakdown
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance
Procedure; Human Factors
Shortly after taking the R92 position an aircraft who calls themselves as Aircraft X said they were two minutes from jumpers away; at around that time I advised Aircraft X of an Aircraft Y to the east of the field headed west bound at 7 thousand working [with] Allentown approach.  The pilot acknowledged but still decided to release his jumpers; a move that I considered unsafe.  The pilot then advised he would stay to the north and begin his descent.  He was asked to report leaving 10 thousand.  The pilot turned to the south and descended fast enough that En Route Automation Modernization (ERAM) showed an exceptional vertical rate readout for MODE C.  Aircraft X's target came very close to and may have merged with the Aircraft Y flight's target.  I tried to call traffic but got no response from Aircraft X.  After Aircraft X was through six thousand he came up on frequency asking if he should contact Allentown.  I asked why he wasn't responding to traffic calls and he said he was coordinating with UNICOM at the time. After many unsafe occurrences with this operator there still hasn't been an LOA signed with them.
A New York Center (ZNY) Controller reports of an aircraft that drops sky divers while conflicting traffic for it is inbound to an airport in close proximity. The Controller thinks this operation is not safe. The pilot was not on frequency all of the time and was off coordinating on UNICOM.