Greenwood Lake Airport (4N1) is a general aviation airport in West Milford, Passaic County, New Jersey, United States.
This public-use airport is owned by the New Jersey Department of Transportation, and managed and operated by Greenwood Lake
Airport Management. It covers an area of 150 acres and has one runway. An old Lockheed Constellation sits on the ramp. This
aircraft is no longer flyable and has been built into part of the terminal building.