Date: 201901
Local time of day: 0601-1200
Location: N90.TRACON, NY
Aircraft: Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Operating under: Part 91
Flight plan: IFR
Mission: Personal
Flight phase: Descent
Airspace: Class E N90
ATC / advisory: TRACON N90
Second aircraft: Medium Large Transport; Low Wing; 2 Turbojet Eng
Reporter organization: Government
Reporter function: Approach
Reporter qualification: Air Traffic Control Fully Certified
Human factors: Training / Qualification; Communication Breakdown; Human-Machine Interface; Situational Awareness
Second reporter function: Approach
Anomaly: ATC Issue All Types; Airspace Violation All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Air Traffic Control
When detected: In-flight
Result: Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic
Contributing factors: Company Policy; Airspace Structure; Human Factors; Procedure
Primary problem: Human Factors

Narrative: I was working the sequence position in the TRACON. I observed the Departure controller descend Aircraft X on V16; from 6;000 feet to 4;000 feet into the face of Feeder sector arrival traffic. The Feeder controller had to turn out two arrivals who were descending through 4;000 feet to maintain 3;000 feet. No pointout or coordination was made with either the Feeder controller who had aircraft there or the FINAL controller who owns the airspace there at 4;000 feet. Later during the same hour; again without coordination the same Departure controller; sent Aircraft Y on a vector right through Feeder's airspace. The Feeder controller had to stop multiple arrivals at 5;000 feet above Aircraft Y to maintain separation. I recommend that when multiple controllers are voicing a safety concern with a certain controller it should be looked into and investigated before someone gets hurt. This controller has these kind of airspace deviations and loss of separation pretty much daily. The FAA is notified each time and yet nothing is being done to protect the flying public or the other controllers working near him.


Second narrative: Aircraft X is a through flight planned at 4;000 feet. Aircraft Z is a JFK arrival being descended to 3;000 feet for the approach. Aircraft X's tag was made yellow about 15 miles NE of JFK on my final vector scope without any verbal coordination. After several minutes I turned the tag green to un-highlight it. Normal procedure is to leave these through overflights at either 5;000 or 6;000 feet to allow the Feeder Sector to Final Sector a bit of room to descend to the approach. The Departure position was working Aircraft X initially and hands the aircraft off to the Feeder position.  The Feeder position then descends the aircraft to 4;000 feet once the aircraft enters its airspace and avoids the Final's airspace. Final Sector owns 4;000 feet to the surface.Without any verbal coordination JFK Departure Sector took Aircraft X through the JFK finals airspace without a pointout. The reason to leave the overflight traffic high is for safety.Departure violated Finals airspace with Aircraft X by leaving that aircraft on V-16 at 4;000 feet without coordination or a pointout. This is very unsafe!! Aircraft Z was the first to cross paths with Aircraft X and also [another arrival] did as well. The controller on JFK departure should be de-certified and needs mandatory retraining on the position as I don't think he knows the airspace or procedures for pointouts or coordination.


Synopsis: N90 TRACON controllers reported another Controller was descending aircraft through their airspace without coordination.