Regional Jet 900 (CRJ900)
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Conflict NMAC
Flight Crew Requested ATC Assistance / Clarification
Human Factors
While downwind for runway 4 at LaGuardia airport; at 4000 feet; over the Hudson River; roughly abeam Central Park; the flight crew witnessed a drone passing the aircraft off the left side just slightly higher; probably within 150 feet of the aircraft. It was reported to the New York Approach Controller at the time of occurrence.
CRJ-900 Captain reported a NMAC with a UAV in the vicinity of LGA airport.