Citation V/Ultra/Encore (C560)
Flight Crew Flight Engineer; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 250; Flight Crew Total 24000; Flight Crew Type 700
Conflict Airborne Conflict; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types
Air Traffic Control Issued Advisory / Alert; Flight Crew Took Evasive Action; Flight Crew Returned To Clearance
Human Factors
Level at 3;000 Ft on right downwind for ILS 19 TEB; abeam the field. Our TCAS auto populated on our Nav Display; with traffic at 12 o'clock; moving directly towards at co-altitude; 2 miles ahead. I started a left turn and then saw the traffic who also was in a turn in the same direction. I immediately reversed direction and began a climb. At the same time approach control called out the traffic. At 3;000 feet we were at the bottom of the Class B airspace. The controller asked us to return to heading when able and asked what kind of aircraft. I thought it was a big Piper Cherokee but the other pilot thought it was a Cirrus. He said he violated the Class B Airspace. We landed uneventfully at TEB.
CE550 Captain reported an airborne conflict with a single engine low wing aircraft at 3;000 feet while on right downwind for Runway 19 at TEB. Evasive action is taken.